| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1982 |
|
Science Fiction Dialogues | Academy Chicago | Nonfiction | 58 |
| 1983 |
|
Non-Literary Influences on Science Fiction | Chris Drumm | Nonfiction | |
| December 1987 | Non-Literary Influences on Science Fiction | Borgo Press | Nonfiction | 5 | |
| 1996 | Outposts: Literatures of Milieux | Borgo Press | Nonfiction | ||
| April 2020 |
|
Beyond the Outposts: Essays on SF and Fantasy 1955-1996 | Ansible Editions | Nonfiction | 245 |