APA (7th ed.) Citation

Bukowski, W. M., Newcomb, A. F., & Hartup, W. W. (1996). The company they keep: Friendships in childhood and adolescence. Cambridge University Press.

Chicago Style (17th ed.) Citation

Bukowski, William M., Andrew F. Newcomb, and Willard W. Hartup. The Company They Keep: Friendships in Childhood and Adolescence. Cambridge [England] ; New York, NY, USA: Cambridge University Press, 1996.

MLA (8th ed.) Citation

Bukowski, William M., et al. The Company They Keep: Friendships in Childhood and Adolescence. Cambridge University Press, 1996.