Cita APA (7a ed.)

Poirier-Brode, K., & Head, J. J. (1987). Adolescent pregnancy and prenatal care. Carolina Biological Supply, Scientific Publications Department.

Cita Chicago Style (17a ed.)

Poirier-Brode, Karen, y J. J. Head. Adolescent Pregnancy and Prenatal Care. Burlington, N.C.: Carolina Biological Supply, Scientific Publications Department, 1987.

Cita MLA (8a ed.)

Poirier-Brode, Karen, y J. J. Head. Adolescent Pregnancy and Prenatal Care. Carolina Biological Supply, Scientific Publications Department, 1987.