Cita APA

Ramsey, S. E., Engler, P. A., & Stein, M. D. (2007). Addressing HIV Risk Behavior Among Pregnant Drug Abusers: An Overview.

Citación estilo Chicago

Ramsey, Susan E., Patricia A. Engler, y Michael D. Stein. Addressing HIV Risk Behavior Among Pregnant Drug Abusers: An Overview. 2007.

Cita MLA

Ramsey, Susan E., Patricia A. Engler, y Michael D. Stein. Addressing HIV Risk Behavior Among Pregnant Drug Abusers: An Overview. 2007.