| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| August 1986 |
|
An Alien Affair | Bridge Publications | Novel | |
| April 1987 |
|
An Alien Affair | New Era Publications | Novel | |
| April 1989 |
|
An Alien Affair | Bridge Publications | Novel | 1 |
| September 1989 |
|
An Alien Affair | New Era Publications | Novel | |
| 1991 |
|
Uma aventura alienÃgena | Record | Novel | |
| January 1992 |
|
Une affaire très étrange | Presses Pocket | Novel | |
| November 1992 |
|
Une affaire très étrange | Presses Pocket | Novel | |
| September 1994 |
|
Une affaire très étrange | Presses Pocket | Novel | |
| February 2004 | An Alien Affair | Galaxy Press | Novel | ||
| February 2006 | An Alien Affair | Galaxy Press | Novel | ||
| February 2012 |
|
Mission Earth Volumes 3 & 4: The Enemy Within & An Alien Affair | Galaxy Press | Omnibus | |
| February 2013 |
|
An Alien Affair | ReadHowYouWant | Novel | |
| March 2013 |
|
An Alien Affair | Galaxy Press | Novel |