| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Ultimate German: Basic-Intermediate | 978-0-609-60733-6 (0-609-60733-2) | 2000 | Ingeborg Lasting |
| Ultimate German: Basic-Intermediate Cassette Program | 978-0-609-60760-2 (0-609-60760-X) | 2000 | " |
| Ultimate German: Basic-Intermediate Coursebook | 978-0-609-80680-7 (0-609-80680-7) | 2000 | " |
H.S. · Heidi Schoenmackers · Heidi Schumacher · Heidi Schwanhäuser · Heidi Schweingruber