| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1980 |
|
Who Writes Science Fiction? | Savoy Books | Nonfiction | 53 |
| November 1980 |
|
Dream Makers: The Uncommon People Who Write Science Fiction | Berkley Books | Nonfiction | 39 |
| April 1982 |
|
Gestalter der Zukunft: Science Fiction und wer sie macht | Hohenheim | Nonfiction | 71 |
| November 2021 |
|
Die Weltenschöpfer Band 1 | Memoranda | Nonfiction | 114 |