Speculative Fiction Novels (20)
| Outcasts: Three Stories 2012 | science fiction, short stories |
| Duty, Honor, Redemption (Star Trek: Signature Edition) 2004 | science fiction > space opera, collection |
| The Moon and the Sun 1997 | fantasy, historical |
| The Crystal Star (Star Wars) 1994 | science fiction > space opera |
| Nautilus (Starfarers #4 / 4) 1994 | science fiction |
| Metaphase (Starfarers #3 / 4) 1992 | science fiction |
| Transition (Starfarers #2 / 4) 1991 | science fiction |
| Starfarers (Starfarers #1 / 4) 1989 | science fiction |
| Screwtop 1989 | science fiction |
| Barbary 1986 | science fiction |
| Enterprise: The First Adventure (Star Trek: The Original Series) 1986 | science fiction > space opera |
| The Voyage Home (Star Trek: The Original Series Film Novelizations) 1986 | science fiction > space opera |
| The Bride 1985 | horror |
| Star Trek III: The Search for Spock (Star Trek: The Original Series (numbered novels) #17 / 97) 1984 | science fiction |
| Superluminal 1983 | science fiction |
| The Wrath of Khan (Star Trek: The Original Series (numbered novels) #7 / 97) 1982 | science fiction |
| The Entropy Effect (Star Trek: The Original Series (numbered novels) #2 / 97) 1981 | science fiction |
| Fireflood and Other Stories 1979 | science fiction, short stories |
| Dreamsnake 1978 | science fiction |
| The Exile Waiting 1975 | science fiction |