APA aipamena

World Health Organization. (1999). Sexually transmitted infections prevalence study methodology. World Health Organization.

Chicago Style aipamena

World Health Organization. Sexually Transmitted Infections Prevalence Study Methodology. Geneva,Switzerland: World Health Organization, 1999.

MLA aipamena

World Health Organization. Sexually Transmitted Infections Prevalence Study Methodology. World Health Organization, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.