APA (7th ed.) Citation

Zelnik, M., Kantner, J. F., & Ford, K. (1981). Sex and pregnancy in adolescence. Sage Publications.

Chicago Style (17th ed.) Citation

Zelnik, Melvin, John F. Kantner, and Kathleen Ford. Sex and Pregnancy in Adolescence. Beverly Hills, Calif.: Sage Publications, 1981.

MLA (9th ed.) Citation

Zelnik, Melvin, et al. Sex and Pregnancy in Adolescence. Sage Publications, 1981.