APA
World Health Organization, . (1997). Intrauterine devices: Technical and managerial guidelines for services. Geneva: World Health Organization.
Chicago
World Health Organization, . 1997. Intrauterine devices: Technical and managerial guidelines for services. Geneva: World Health Organization.
Harvard
World Health Organization, . (1997). Intrauterine devices: Technical and managerial guidelines for services. Geneva: World Health Organization.
MLA
World Health Organization, . Intrauterine devices: Technical and managerial guidelines for services. Geneva: World Health Organization. 1997.