World Health Organization. (2001). Sexually transmitted infections: Briefing kit for teachers. World Health Organization.
Citación estilo ChicagoWorld Health Organization. Sexually Transmitted Infections: Briefing Kit for Teachers. Manila, Philippines: World Health Organization, 2001.
Cita MLAWorld Health Organization. Sexually Transmitted Infections: Briefing Kit for Teachers. World Health Organization, 2001.
Warning: These citations may not always be 100% accurate.