APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.