| title | ISBN-13 | year of publica-
tion | other author(s) |
|---|
| Challenges 1 CDROM | 978-1-4058-4878-7 | 2007 | Michael Harris |
| Challenges1 SBk&CDRom Pack | 978-1-4058-6814-3 | 2007 | " |
| Challenges: 1 Students' Book | 978-1-4058-4880-0 | 2007 | " |
| Challenges 2 CDROM | 978-1-4058-4884-8 | 2007 | " |
| Challenges2 SBK&CD Rom Pack | 978-1-4058-6815-0 | 2007 | " |
| Challenges 3 CDROM | 978-1-4058-4890-9 | 2008 | " |
| Challenges3 SBK&CDRom Pack | 978-1-4058-6816-7 | 2008 | " |
| Challenges 4 Students Book & DVD/MultiRom Pack | 978-1-4058-8995-7 | 2008 | Michael Harris · Anna Sikorzynska |
| Challenges 4 Teacher's Handbook & Test Master CD Rom Pack | 978-1-4058-9135-6 | 2008 | Patricia Mugglestone · Anna Sikorzynska · Michael Harris |
| Challenges 4 Test Master CD-Rom | 978-1-4058-6727-6 | 2008 | Anna Sikorzynska · Michael Harris |
| Challenges 5 Students Book & DVD/Multi Rom Pack | 978-1-4058-8996-4 | 2008 | Michael Harris · Anna Sikorzynska |
| Challenges 5 Teacher's Hand Book & Test Master CD Rom Pack | 978-1-4058-9136-3 | 2008 | Patricia Mugglestone · Michael Harris · Anna Sikorzynska |
| Challenges 5 Test Master CD-Rom | 978-1-4058-6736-8 | 2008 | Michael Harris · Anna Sikorzynska |
| Challenges 6 Teacher's Hand Book & Test Master CDRom Pack | 978-1-4058-9137-0 | 2008 | Patricia Mugglestone · Anna Sikorzynska |
| Challenges 6 Test Master CD-Rom | 978-1-4058-6745-0 | 2008 | Anna Sikorzynska |
| Challenges Arab 1 Teacher S Handbook | 978-1-4058-4881-7 | 2007 | Michael Harris |
| Challenges Arab 1 Total Teacher S Pac | 978-1-4058-4882-4 | 2007 | " |
| CHALLENGES ARAB 2 STUDENTS BOOK FOR | 978-1-4058-4886-2 | 2007 | " |
| Challenges Arab 2 Teacher S Handbook | 978-1-4058-4887-9 | 2007 | " |
| Challenges Arab 2 Total Teacher S Pac | 978-1-4058-4888-6 | 2007 | " |
| CHALLENGES ARAB 3 STUDENTS BOOK FOR | 978-1-4058-4891-6 | 2008 | " |
| Challenges Arab 3 Teacher S Handbook | 978-1-4058-4893-0 | 2008 | " |
| Challenges Arab 3 Total Teacher S Pac | 978-1-4058-4894-7 | 2008 | " |
| Challenges Arab 4 Class Cds | 978-1-4058-6723-8 | 2008 | Michael Harris · Anna Sikorzynska |
| CHALLENGES ARAB 4 STUDENT S BOOK FOR | 978-1-4058-6725-2 | 2008 | Michael Harris · Anna Sikorzynska |
| Challenges Arab 5 Class Cds | 978-1-4058-6732-0 | 2008 | Michael Harris · Anna Sikorzynska |
| CHALLENGES ARAB 5 STUDENT S BOOK FOR | 978-1-4058-6734-4 | 2008 | Michael Harris · Anna Sikorzynska |
| Challenges Arab 6 Class Cds | 978-1-4058-6741-2 | 2008 | Michael Harris · Anna Sikorzynska |
| CHALLENGES ARAB 6 STUDENT S BOOK FOR | 978-1-4058-6744-3 | 2008 | Michael Harris · Anna Sikorzynska |
| Challenges Arab Basic SBk&CDRM Pk | 978-1-4058-6178-6 | 2007 | Michael Harris |
| Challenges Arab Basic Teacher S Handb | 978-1-4058-4899-2 | 2007 | " |
| Challenges Basic CDROM fr pk | 978-1-4058-4896-1 | 2007 | " |
| Challenges: Basic Students' Book | 978-1-4058-4898-5 | 2007 | " |
| Challenges Class Cassette 4 1-3: Class Cassette 1-2 Level 4 | 978-0-582-85176-4 | 2007 | Michael Harris · Anna Sikorzynska |
| Challenges Class CD 1 1-3: Class CD 1-3 Level 1 | 978-0-582-85177-1 | 2006 | Michael Harris |
| Challenges Class CD 2 1-3: Class CD 1-2 Level 2 | 978-0-582-85178-8 | 2006 | Michael Harris · Anna Sikorzynska |
| Challenges Class CD 3 1-4: Clas CD 1-3 | 978-0-582-85179-5 | 2007 | Michael Harris · Anna Sikorzynska |
| Challenges Class CD 4 1-4: Class CD 1-3 Level 4 | 978-0-582-85180-1 | 2007 | Michael Harris · Anna Sikorzynska |
| Challenges DVD 1: The Line PAL: Level 1 | 978-1-4058-3346-2 | 2007 | Michael Harris · Anna Sikorzynska |
| Challenges DVD 2: The Real Shakespeare PAL: Level 2 | 978-1-4058-3347-9 | 2007 | Michael Harris · Anna Sikorzynska |
| Challenges Poland Student Bk 1 | 978-1-4058-2989-2 | 2009 | Michael Harris |
| Challenges Poland Student Bk 2 | 978-1-4058-2990-8 | 2009 | Michael Harris · Anna Sikorzynska |
| Challenges Poland Student Bk 3 | 978-1-4058-2991-5 | 2009 | Anna Sikorzynska · Michael Harris |
| Challenges Poland Student Bk 4 | 978-1-4058-2992-2 | | Michael Harris · Anna Sikorzynska |
| Challenges Poland: Teacher's Handbook Bk. 1 | 978-1-4058-3314-1 | 2006 | Anna Sikorzynska · Michael Harris · Patricia Mugglestone |
| Challenges Student Book 2 Global: Student Book Global Bk. 2 | 978-0-582-84676-0 | 2007 | Michael Harris · Anna Sikorzynska |
| Challenges Student Book 3 Global: Student Book Global Bk. 3 | 978-0-582-84677-7 | 2007 | Michael Harris |
| Exam Challenges 1 Workbook | 978-83-88291-97-5 | 2010 | Amanda Maris |
| Exam Challenges 2 student's book with CD | 978-83-88291-93-7 | 2009 | Anna Sikorzynska · Michael Harris |
| Exam Challenges 3 Students' Book with CD | 978-83-88291-94-4 | 2011 | Anna Sikorzynska · Michael Harris |
| Going Places 2 Student'S Book - 9788498373233 | 978-84-9837-323-3 | 2009 | Mike Harris |
| Going Places 2 Workbook Pack - 9788498373240 | 978-84-9837-324-0 | 2009 | " |
| Going Places 3 Student'S Book - 9788498373288 | 978-84-9837-328-8 | 2009 | " |
| Going Places 3 Workbook Pack - 9788498373295 | 978-84-9837-329-5 | 2009 | " |
| Going Places 4 Student'S Book - 9788498373332 | 978-84-9837-333-2 | 2009 | " |
| Going Places 4 Workbook Pack - 9788498373349 | 978-84-9837-334-9 | 2009 | " |
| New Exam Challenges 4 Students' Book | 978-83-7600-657-4 | 2013 | Anna Sikorzynska · Michael Harris |
| Opportunities 1 Language Powerbook | 978-1-4058-0033-4 | 2005 | A Sikorzynska · Michael Harris |
| Opportunities 1 Students' Book | 978-1-4058-0034-1 | 2005 | Michael Harris · A Sikorzynska |
| Opportunities 1 Teacher's Book | 978-1-4058-0035-8 | 2005 | A Sikorzynska · Michael Harris |
| Opportunities | 978-1-4058-2946-5 | 2006 | Anna Sikorzynska · Michael Harris |
| Opportunities | 978-1-4058-2947-2 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Around the World | 978-1-4058-2948-9 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Around the World DVD | 978-1-4058-2942-7 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Beginner Global Class CD 1-3 | 978-0-582-77094-2 | 2002 | Michael Harris |
| Opportunities Beginner Global Language Powerbook | 978-0-582-51170-5 | 2002 | " |
| Opportunities Elementary Global Cl Cassettes 1-2: Elementary CEE//Poland Class Cassettes | 978-0-582-42136-3 | 2001 | " |
| Opportunities Elementary Polish Class Cassette 1-2 | 978-0-582-82352-5 | 2005 | Anna Sikorzynska · Michael Harris |
| Opportunities Global Beginner Class Cassette NE 1-2 | 978-1-4058-3194-9 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Beginner Class CD NE | 978-1-4058-3195-6 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Beginner Reading Texts Cassette NE | 978-1-4058-3196-3 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Beginner Students' Book NE | 978-1-4058-3200-7 | 2006 | Michael Harris |
| Opportunities Global Elementary Student Book Pack: WITH Opportunities Global Elementary Students' Book AND Opportunities DVD | 978-1-4058-3800-9 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Elementary Students' Book NE | 978-0-582-85411-6 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Elementary Teacher's Book | 978-0-582-51168-2 | 2002 | Michael Harris |
| Opportunities Global Intermediate Student Book Pack: WITH Opportunities Global Intermediate Students' Book AND Opportunities DVD | 978-1-4058-3802-3 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Intermediate Students' Book NE | 978-0-582-85415-4 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Pre-Intermediate Student Book Pack: WITh Opportunities Global Pre-Intermediate Students' Book AND Opportunities DVD | 978-1-4058-3801-6 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Pre-Intermediate Students' Book NE | 978-0-582-85419-2 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Upper-Intermediate Language Powerbook NE | 978-0-582-85422-2 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Upper-Intermediate Students' Book NE | 978-0-582-85423-9 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Global Upper-Int Language Powerbook Pack: WITh Opportunities Upper-Intermediate Global Language Powerbook AND Opportunities CD-ROM | 978-1-4058-3799-6 | 2007 | Michael Harris · Anna Sikorzynska · Ms Patricia Reilly |
| Opportunities Intermediate Global Students' Book: Opportunities Inter Cee Sbk | 978-0-582-42134-9 | 2000 | Michael Harris |
| Opportunities: Opportunities Int Polish Wbk | 978-0-582-41968-1 | 2000 | M Harris |
| Opportunities: Opportunities Upper Intermediate Teacher's Book Upper Intermediate Teacher's Book | 978-0-582-42152-3 | 2002 | Michael Harris |
| Opportunities Russia Beginner Students' Book | 978-1-4058-3105-5 | 2006 | " |
| Opportunities Russia Elementary Students' Book | 978-1-4058-3110-9 | 2006 | " |
| Opportunities Russia Intermediate Students' Book | 978-1-4058-3115-4 | 2006 | Michael Harris · Anna Sikorzynska · Irina Larionova |
| Opportunities Russia Pre-Intermediate Students' Book | 978-1-4058-3122-2 | 2006 | Michael Harris · Anna Sikorzynska · Irina Larionova |
| Opportunities Russia Upper-Intermediate Language Powerbook | 978-1-4058-3126-0 | 2006 | Michael Harris |
| Opportunities Russia Upper-Intermediate Students' Book | 978-1-4058-3127-7 | 2006 | " |
| Opportunities UK/US DVD | 978-1-4058-2939-7 | 2006 | Michael Harris · Anna Sikorzynska |
| Opportunities Upper Intermediate Global Students' Book: Upper-Intermediate Student Book | 978-0-582-41973-5 | 2002 | Michael Harris |
| Topics: Humanities | 978-1-4058-3400-1 | 2006 | Michael Harris · Anna Sikorzynska |
| Topics: Science | 978-1-4058-3401-8 | 2006 | Michael Harris · Anna Sikorzynska |
| Topics: The World Today | 978-1-4058-3402-5 | 2006 | Michael Harris · Anna Sikorzynska |
| World Class 1: Class Cassete: Level 1 | 978-0-582-21857-4 | 1994 | Michael Harris |
| World Class 3: Class Cassettes Set : Pre-intermediate Cassettes | 978-0-582-05331-1 | 1993 | " |
| World Class 4: Class Cassettes Set : Cassette Set Level 4 | 978-0-582-05334-2 | 1994 | " |
| World Class: Activity Book Cassette Level 1 | 978-0-582-21856-7 | 1994 | Olivia Date · Susan Axbey · Michael Harris |
| World Class Activity Book, Level 2: Elementary Activity Bk | 978-0-582-05325-0 | 1991 | Michael Harris |
| World Class: Elementary, Level 2 | 978-0-582-05329-8 | 1991 | " |
| World Class, Level 1, Activity Book: Activity Book Level 1 | 978-0-582-21855-0 | 1994 | " |
| World Class Level 1 Teacher's Book: Teachers Book Level 1 | 978-0-582-21858-1 | 1994 | " |
| World Class Level 2 Activity Book Cassette: Elementary Activity Book Cassette | 978-0-582-05330-4 | 1991 | " |
| World Class Level 2 Teacher's Book: Teacher's Book Level 2 | 978-0-582-05322-9 | 1991 | " |
| World Class Level 3 Activity Book Cassette: Pre-intermediate Activity Book Cassette | 978-0-582-05333-5 | 1993 | " |
| World Class, Level 3, Pre-Intermediate, Activity Book | 978-0-582-05326-7 | 1993 | " |
| World Class Level 3 Teacher's Book: Teacher's Book Level 3 | 978-0-582-05323-6 | 1993 | Michael Harris · P McCann |
| World Class, Level 4: Activity Book | 978-0-582-05327-4 | 1994 | Michael Harris · Olivia Date |
| World Class, Level 4: Student's Book: Student's Book Level 4 | 978-0-582-05321-2 | 1994 | Michael Harris |
| World Class Level 4 Teacher's Book: Teacher's Book Level 4 | 978-0-582-05324-3 | 1994 | Michael Harris · P McCann |
| World Class Student's Book, 1: Starter | 978-0-582-21859-8 | 1994 | Michael Harris |
| World Class Student's Book, Level 2: Elementary | 978-0-582-05319-9 | 1991 | " |
| World Class Student's Book, Level 2: Intermediate | 978-0-582-05320-5 | 1993 | " |
| World Club 1: Class Cassette: Class Cassette Level 1 | 978-0-582-34986-5 | 2000 | " |
| World Club 2: Class Cassette | 978-0-582-34987-2 | 2000 | " |
| World Club 2 Student Book Harris Print and Sell | 978-1-4058-2103-2 | 2005 |
| World Club 2 Workbook Print and Sell | 978-1-4058-2104-9 | 2005 |
| World Club 3 Workbook Print and Sell | 978-1-4058-2106-3 | 2005 |
| World Club Activity Book 4: Answer Book | 978-0-582-34978-0 | 2000 | Michael Harris |
| World Club Activity Book 4: Answer Book | 978-0-582-34980-3 | 2000 | " |
| World Club Activity Book 4: Answer Book | 978-0-582-34981-0 | 2000 | " |
| World Club: Activity Book | 978-0-582-34977-3 | 2000 | " |
| World Club Intermediate Students Book Print and Sell | 978-1-4058-2107-0 | 2005 |
| World Club Intermediate Workbook Print and Sell | 978-1-4058-2108-7 | 2005 |
| World Club Level 3 Students Book Print and Sell | 978-1-4058-2105-6 | 2005 |
| World Club Students Book 2: Student Book | 978-0-582-34974-2 | 2000 | Michael Harris |
| World Club Students Book 4: Student Book | 978-0-582-34976-6 | 2000 | " |
| World Club Teacher's Book 1 | 978-0-582-34982-7 | 2000 | " |
| World Club Teacher's Book 1 | 978-0-582-34983-4 | 2000 | " |