APA (7th ed.) Citation

Oswald, I. (1980). Sleep (4th ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Oswald, Ian. Sleep. 4th ed. Harmondsworth, Middlesex, England ; New York, N.Y.: Penguin Books, 1980.

MLA (9th ed.) Citation

Oswald, Ian. Sleep. 4th ed. Penguin Books, 1980.