| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| January 1973 |
|
Planet Probability | DAW Books | Novel | 5 |
| January 1973 |
|
Planet Probability | DAW Books / New American Library of Canada | Novel | 5 |
| July 1976 |
|
Science Fiction Special (18) | Sidgwick & Jackson | Omnibus |