APA (7th ed.) Zitazioa
Beyrer, C. (2011). The global HIV epidemics among men who have sex with men. World Bank.
Chicago Style (17th ed.) Zitazioa
Beyrer, Chris. The Global HIV Epidemics Among Men Who Have Sex with Men. Washington, D.C.: World Bank, 2011.
MLA (9th ed.) Zitazioa
Beyrer, Chris. The Global HIV Epidemics Among Men Who Have Sex with Men. World Bank, 2011.
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