| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1991 |
|
Black Unicorn | Atheneum / Macmillan | Novel | |
| November 1992 |
|
Black Unicorn | Atheneum / SFBC | Novel | |
| 1993 |
|
El unicornio negro | Timun Mas | Novel | |
| 1994 |
|
Das Mädchen und das schwarze Einhorn | Bastei Lübbe | Novel | |
| December 2002 |
|
Black Unicorn | ibooks | Novel | |
| December 2005 |
|
Black Unicorn | ibooks | Novel |