APA (7th ed.) Citation

Lewis, M. (1975). Friendship and peer relations. The Origins of behavior.

Chicago Style (17th ed.) Citation

Lewis, Michael. "Friendship and Peer Relations." The Origins of Behavior 1975.

MLA (8th ed.) Citation

Lewis, Michael. "Friendship and Peer Relations." The Origins of Behavior, 1975.

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