APA citiranje

Pappas, M. K., & Halkitis, P. N. (2011). Sexual Risk Taking and Club Drug Use Across Three Age Cohorts of HIV-positive Gay and Bisexual Men in New York City.

Citação norma Chicago

Pappas, Molly K., and Perry N. Halkitis. Sexual Risk Taking and Club Drug Use Across Three Age Cohorts of HIV-positive Gay and Bisexual Men in New York City. 2011.

MLA citiranje

Pappas, Molly K., and Perry N. Halkitis. Sexual Risk Taking and Club Drug Use Across Three Age Cohorts of HIV-positive Gay and Bisexual Men in New York City. 2011.