World Health Organization. (1999). STI HIV: Status and trends of STI, HIV and AIDS at the end of the Millennium. World Health Organization.
Chicago-Zitierstil (17. Ausg.)World Health Organization. STI HIV: Status and Trends of STI, HIV and AIDS at the End of the Millennium. Geneva, Switzerland: World Health Organization, 1999.
MLA-Zitierstil (8. Ausg.)World Health Organization. STI HIV: Status and Trends of STI, HIV and AIDS at the End of the Millennium. World Health Organization, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.