Cita APA (7a ed.)

Zelnik, M., Kantner, J. F., & Ford, K. (c 1981). Sex and pregnancy in adolescence. Sage library of social research.

Cita Chicago Style (17a ed.)

Zelnik, Melvin, John Frederick Kantner, y Kathleen Ford. "Sex and Pregnancy in Adolescence." Sage Library of Social Research c 1981.

Cita MLA (9a ed.)

Zelnik, Melvin, et al. "Sex and Pregnancy in Adolescence." Sage Library of Social Research, c 1981.