| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1991 |
|
Writing Science Fiction and Fantasy | St. Martin's Press | Nonfiction | 38 |
| March 1993 | Writing Science Fiction and Fantasy | St. Martin's Press | Nonfiction | 38 | |
| April 1997 |
|
Writing Science Fiction and Fantasy | St. Martin's Griffin | Nonfiction | 38 |