APA aipamena

(2005). Selected practice recommendations for contraceptive use (2nd ed.). World Health Organisation.

Chicago Style aipamena

Selected Practice Recommendations for Contraceptive Use. 2nd ed. Geneva: World Health Organisation, 2005.

MLA aipamena

Selected Practice Recommendations for Contraceptive Use. 2nd ed. World Health Organisation, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.