| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Distance Education: New Perspectives | Paperback | 978-0-415-86775-7 | 2014 | Keith Harry · Magnus John |
| Distance training in the European Union | " | 978-92-827-9674-0 | 1997 | |
| Foundations of Distance Education | Hardcover | 978-1-138-14232-9 | 2016 | |
| Foundations of Distance Education | Paperback | 978-0-415-13909-0 | 1996 | |
| Foundations of Distance Education | Hardcover | 978-0-7099-1547-8 | 1986 | |
| Otto Peters on Distance Education | Paperback | 978-0-415-86729-0 | 2014 | |