Casola, A. R., Nelson, D. B., & Patterson, F. (2017). Sex Differences in Contraception Non-Use Among Urban Adolescents: Risk Factors for Unintended Pregnancy. J Sch Health.
استشهاد بنمط شيكاغوCasola, Allison R., Deborah B. Nelson, و Freda Patterson. "Sex Differences in Contraception Non-Use Among Urban Adolescents: Risk Factors for Unintended Pregnancy." J Sch Health 2017.
MLA استشهادCasola, Allison R., Deborah B. Nelson, و Freda Patterson. "Sex Differences in Contraception Non-Use Among Urban Adolescents: Risk Factors for Unintended Pregnancy." J Sch Health 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.