Edited
| Title | Type | Year | |
|---|---|---|---|
|
|
If / Worlds of If, December 1967 | Magazine issue | 1967 |
|
If / Worlds of If, January 1968 | Magazine issue | 1968 |
|
If / Worlds of If, February 1968 | Magazine issue | 1968 |
Appeared alongside James White in
| Title | Type | Year | Year | |
|---|---|---|---|---|
|
8th Annual Year's Best SF | Anthology | 1963 | |
|
Heimkehr zu den Sternen | Anthology | 1963 | |
|
The Best of Sci-Fi No. 4 | Anthology | 1965 | |
|
Die Nacht der zehn Milliarden Lichter | Anthology | 1967 | |
|
The Best from Galaxy 3 | Anthology | 1975 | |
|
To Follow a Star | Anthology | 1978 | |
|
The 1983 Annual World's Best SF | Anthology | 1983 | |
|
World's Best SF 2 | Anthology | 1983 | |
|
Top SF 1 | Anthology | 1986 | |
|
Christmas on Ganymede | Anthology | 1990 | |
|
The Big Book of Science Fiction: The Ultimate Collection | Anthology | 2016 | |
|
Häpna!, January 1962 | Magazine issue | 1962 | |
|
Häpna!, March 1962 | Magazine issue | 1962 | |
|
Galaxy, November 1973 (UK edition) | Magazine issue | 1973 | |
|
Galaxy, November 1973 (US edition) | Magazine issue | 1973 | |
|
Orbit: Het tijdschrift voor science fiction & fantasy, 10 December 1980 | Magazine issue | 1980 |