APA (7th ed.) Citation

Lewis, C. (1962). The problem of pain. MacMillan.

Chicago Style (17th ed.) Citation

Lewis, C.S. The Problem of Pain. New York: MacMillan, 1962.

MLA (9th ed.) Citation

Lewis, C.S. The Problem of Pain. MacMillan, 1962.

Warning: These citations may not always be 100% accurate.