APA
World health organization, . (2010). Medical eligibility criteria for contraceptive use. World health organization, Switzerland: .
Chicago
World health organization, . 2010. Medical eligibility criteria for contraceptive use. World health organization, Switzerland: .
Harvard
World health organization, . (2010). Medical eligibility criteria for contraceptive use. World health organization, Switzerland: .
MLA
World health organization, . Medical eligibility criteria for contraceptive use. World health organization, Switzerland: . 2010.