| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| June 1987 |
|
Dirk Gently's Holistic Detective Agency | Simon & Schuster | Novel | |
| November 1987 |
|
Dirk Gently's Holistic Detective Agency | Pocket Books | Novel | |
| April 1989 |
|
Dirk Gently's Holistic Detective Agency | Simon & Schuster / SFBC | Novel |