| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Robert A. Heinlein: A Reader's Companion | Paperback | 978-0-9679874-0-8 (0-9679874-0-7) | 2000 | James Gifford |
| Robert A. Heinlein: A Reader's Companion | Hardcover | 978-0-9679874-1-5 (0-9679874-1-5) | 2000 | " |
D. G. · Daniel Gifford · J.D. · J. Daniel · J. G. · J Gifford