Cita APA (7a ed.)
(2003). Internet use and early syphilis infection among men who have sex with men -- San Francisco, California, 1999-2003. MMWR: Morbidity & Mortality Weekly Report, 52(50), 1229-1233.
Cita Chicago Style (17a ed.)
"Internet Use and Early Syphilis Infection Among Men Who Have Sex with Men -- San Francisco, California, 1999-2003." MMWR: Morbidity & Mortality Weekly Report 52, no. 50 (2003): 1229-1233.
Cita MLA (9a ed.)
"Internet Use and Early Syphilis Infection Among Men Who Have Sex with Men -- San Francisco, California, 1999-2003." MMWR: Morbidity & Mortality Weekly Report, vol. 52, no. 50, 2003, pp. 1229-1233.
Precaución: Estas citas no son 100% exactas.