World Health Organization. (2001). Sexually transmitted infections: Briefing kit for teachers. World Health Organization.
Citação do estilo Chicago (17ª ed.)World Health Organization. Sexually Transmitted Infections: Briefing Kit for Teachers. Manila, Philippines: World Health Organization, 2001.
Citação MLA (8ª ed.)World Health Organization. Sexually Transmitted Infections: Briefing Kit for Teachers. World Health Organization, 2001.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.