Cita APA

Hatfield, L. A., Horvath, K. J., Jacoby, S. M., & Rosser, B. R. S. (2009). Comparison of substance use and risky sexual behavior among a diverse sample of urban, HIV-positive men who have sex with men.

Chicago Style Citation

Hatfield, Laura A., Keith J. Horvath, Scott M. Jacoby, i B. R. Simon Rosser. Comparison of Substance Use and Risky Sexual Behavior Among a Diverse Sample of Urban, HIV-positive Men Who Have Sex With Men. 2009.

Cita MLA

Hatfield, Laura A., Keith J. Horvath, Scott M. Jacoby, i B. R. Simon Rosser. Comparison of Substance Use and Risky Sexual Behavior Among a Diverse Sample of Urban, HIV-positive Men Who Have Sex With Men. 2009.