Dyfyniad APA

World Health Organization. (2001). Sexually transmitted infections: Briefing kit for teachers. World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization. Sexually Transmitted Infections: Briefing Kit for Teachers. Manila, Philippines: World Health Organization, 2001.

Dyfyniad MLA

World Health Organization. Sexually Transmitted Infections: Briefing Kit for Teachers. World Health Organization, 2001.

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