| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Cover to Cover 1: Class Audio CDs | 978-0-19-475816-1 | 2007 | Richard Day · Kenton Harsch · Leslie Ono |
| Cover to Cover 1: Student Book: Reading Comprehension and Fluency | 978-0-19-475813-0 | 2007 | Richard Day · Kenton Harsch · Leslie Ono |
| Cover to Cover 1: Teacher's Book | 978-0-19-475809-3 | 2007 | Richard Day · Kenton Harsch · Leslie Ono |
| Cover to Cover 2: Class Audio CDs | 978-0-19-475817-8 | 2007 | Richard Day · Kenton Harsch · Leslie Ono |
| Cover to Cover 2: Student Book | 978-0-19-475814-7 | 2007 | Richard Day · Kenton Harsch · Leslie Ono |
| Cover to Cover 2: Teacher's Book | 978-0-19-475810-9 | 2007 | Richard Day · Kenton Harsch · Leslie Ono |
| Cover to Cover 3: Class Audio CDs | 978-0-19-475818-5 | 2007 | Richard Day · Kenton Harsch · Leslie Ono |
| Cover to Cover 3: Student Book | 978-0-19-475815-4 | 2007 | Richard Day · Kenton Harsch · Leslie Ono |
| Cover to Cover 3: Teacher's Book | 978-0-19-475811-6 | 2007 | Richard Day · Kenton Harsch · Leslie Ono |
| Impact Issues 3 Student Book with Audio CD | 978-962-01-9932-5 | 2008 | Richard R. Day · DAY & SHAULES · Michael Rost |
| Impact Issues: 30 Key Issues to Help You Express Yourself in English with CD | 978-962-00-1480-2 | 1998 | Richard R. Day |
| Impact Issues Level 1 Student Book W/CD | 978-962-01-9930-1 | 2008 | Richard R. Day · Joseph Shaules |
| Impact Issues Level 2 Student Book w/CD | 978-962-01-9931-8 | 2011 | Richard R. Day · DAY & SHAULES · Michael Rost |
| Impact Topics! 30 Exciting Topics to Talk About in English | 978-962-00-5055-8 | 1999 | Richard R. Day |
| Impact Values! 30 Discussion Topics to Help You Explore Your Own Values | 978-962-00-5263-7 | 2002 | Richard R. Day · Joseph Shaules |