Cita APA (7th ed.)

National Research Council (U.S.). Panel on Adolescent Pregnancy and Childbearing & Hayes, C. D. (1987). Risking the future: Adolescent sexuality, pregnancy, and childbearing. National Academy Press.

Cita Chicago (17th ed.)

National Research Council (U.S.). Panel on Adolescent Pregnancy and Childbearing i Cheryl D. Hayes. Risking the Future: Adolescent Sexuality, Pregnancy, and Childbearing. Washington, D.C: National Academy Press, 1987.

Cita MLA (9th ed.)

National Research Council (U.S.). Panel on Adolescent Pregnancy and Childbearing i Cheryl D. Hayes. Risking the Future: Adolescent Sexuality, Pregnancy, and Childbearing. National Academy Press, 1987.