Incoming Resources
- Penguin, Harmondsworth, 1987
- Penguin, Harmondsworth, New York, 1977
- Puffin, Harmondsworth, 1982, 1983 printing
- Penguin, Harmondsworth, 1972
- Puffin Books, Harmondsworth, 1976
- Penguin, Harmondsworth, 1973
- Penguin, Harmondsworth, New York, 1978
- Penguin Books, Harmondsworth, 1965