HIV in men who have sex with men.

MLA

Horton, Richard. Hiv In Men Who Have Sex with Men. London: The Lancet, 2012.

APA

Horton, R. (2012). HIV in men who have sex with men. London: The Lancet.

Chicago

Horton, Richard HIV In Men Who Have Sex with Men. London: The Lancet, 2012.