| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| February 1977 |
|
Turning Points: Essays on the Art of Science Fiction | Harper & Row | Nonfiction | 64 |
| March 1985 |
|
Late Knight Edition | NESFA Press | Collection | 3 |
| March 1985 |
|
Late Knight Edition | NESFA Press | Collection | 3 |
| April 1991 |
|
Nebula Awards 25 | Harcourt Brace Jovanovich | Anthology | 1 |
| April 1991 |
|
Nebula Awards 25 | Harcourt Brace Jovanovich | Anthology | 1 |
| May 2014 |
|
Turning Points: Essays on the Art of Science Fiction | Gateway / Orion | Nonfiction | |
| January 2021 |
|
Late Knight Edition | ReAnimus Press | Collection | |3 |