Peter L. · Peter Lachnit · Petra Lachnit
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| English as a Second Language IGCSE Workbook: IGCSE workbook | 978-0-521-89345-9 | 2004 | Lydia Kellas |
| First Language English: IGCSE Coursebook | 978-0-521-01172-3 | 2002 | Marian Cox |
| IGCSE English as a Second Language | 978-0-521-54694-2 | 2004 | |
| IGCSE English as a Second Language Teacher's Book | 978-0-521-54695-9 | 2004 | Lydia Kellas |
| International English: Coursebook Bk. 1 | 978-0-340-95950-3 | 2008 | " |
| International English: Workbook Bk. 1 | 978-0-340-95944-2 | 2008 | " |