World Health Organization. Reproductive Health and Research & ebrary, Inc. (2009). Medical eligibility criteria for contraceptive use (4th ed.). Reproductive Health and Research, World Health Organization.
Citazione stile Chigago Style (17a edizione)World Health Organization. Reproductive Health and Research e Inc ebrary. Medical Eligibility Criteria for Contraceptive Use. 4th ed. Geneva: Reproductive Health and Research, World Health Organization, 2009.
Citatione MLA (9a ed.)World Health Organization. Reproductive Health and Research e Inc ebrary. Medical Eligibility Criteria for Contraceptive Use. 4th ed. Reproductive Health and Research, World Health Organization, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.