Incoming Resources
- Penguin, Harmondsworth, Eng., New York, 1976
- Penguin Books in association with William Heinemann, Harmondsworth, Eng., New York, 1975, c1951
- Penguin Books, Harmondsworth, Eng., 1953
- Penguin Books, Harmondsworth, Eng., New York, 1977, c1973
- Penguin Books, Harmondsworth, Eng., New York, 1978