APA (7th ed.) Citation

Snow, C. P. (1969). Variety of men. Penguin Books.

Chicago Style (17th ed.) Citation

Snow, C. P. Variety of Men. Harmondsworth, Middlesex, England ; New York, N.Y.: Penguin Books, 1969.

MLA (8th ed.) Citation

Snow, C. P. Variety of Men. Penguin Books, 1969.