APA استشهاد

Earls, F., & Powell, J. (1988). Patterns of substance use and abuse in inner-city adolescent medical patients. Yale Journal of Biology and Medicine.

استشهاد بنمط شيكاغو

Earls, F., و J. Powell. Patterns of Substance Use and Abuse in Inner-city Adolescent Medical Patients. Yale Journal of Biology and Medicine, 1988.

MLA استشهاد

Earls, F., و J. Powell. Patterns of Substance Use and Abuse in Inner-city Adolescent Medical Patients. Yale Journal of Biology and Medicine, 1988.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.