| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1982 | 978-0-9605676-0-7 | Thomas Knauff | Glider basics: From first flight to solo |
| 1990 | 978-0-9605676-2-1 | Thomas L. Knauff | Glider Basics from Solo to License |
| 1984 | 978-0-9605676-3-8 | Thomas L. Knauff | Glider Basics from First Flight to Solo |