| Source | Date | Type | Role |
|---|---|---|---|
| The Tunnel Under the World | 1955-01 | ShortStory | Author |
| Gateway | 1977 | Book | Author |
| Power Play | 1979-04 | Essay | Author |
| Foundations of Science Fiction: A Study in Imagination and Evolution | 1987-04 | Book | Foreword |
| Homegoing | 1989-04 | Book | Author |