(2005). Selected practice recommendations for contraceptive use (2nd ed.). World Health Organisation.
Chicago Edition CitationSelected Practice Recommendations for Contraceptive Use. 2nd ed. Geneva: World Health Organisation, 2005.
Cita MLASelected Practice Recommendations for Contraceptive Use. 2nd ed. World Health Organisation, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.