Cita APA (7a ed.)

National Research Council (U.S.). Panel on Adolescent Pregnancy and Childbearing & Hayes, C. D. (1990). Risking the future: 1, Adolescent sexuality, pregnancy and childbearing (6th print.). National Academy Press.

Cita Chicago Style (17a ed.)

National Research Council (U.S.). Panel on Adolescent Pregnancy and Childbearing y Cheryl D. Hayes. Risking the Future: 1, Adolescent Sexuality, Pregnancy and Childbearing. 6th print. Washington: National Academy Press, 1990.

Cita MLA (9a ed.)

National Research Council (U.S.). Panel on Adolescent Pregnancy and Childbearing y Cheryl D. Hayes. Risking the Future: 1, Adolescent Sexuality, Pregnancy and Childbearing. 6th print. National Academy Press, 1990.