APA (7th ed.) Citation

Zelnik, M., Kantner, J. F., & Ford, K. (1981). Sex and pregnancy in adolescence (1. print.). Sage.

Chicago Style (17th ed.) Citation

Zelnik, Melvin, John F. Kantner, and Kathleen Ford. Sex and Pregnancy in Adolescence. 1. print. Beverly Hills, Calif. [u.a.]: Sage, 1981.

MLA (9th ed.) Citation

Zelnik, Melvin, et al. Sex and Pregnancy in Adolescence. 1. print. Sage, 1981.