World Health Organization Reproductive Health and Research & World health organization Family and Community Health. (2002). Selected practice recommendations for contraceptive use. Reproductive Health and Research, Family and Community Health World Health Organization.
Citazione stile Chigago Style (17a edizione)World Health Organization Reproductive Health and Research e World health organization Family and Community Health. Selected Practice Recommendations for Contraceptive Use. Geneva: Reproductive Health and Research, Family and Community Health World Health Organization, 2002.
Citatione MLA (8a ed.)World Health Organization Reproductive Health and Research e World health organization Family and Community Health. Selected Practice Recommendations for Contraceptive Use. Reproductive Health and Research, Family and Community Health World Health Organization, 2002.