World Health Organization. Pregnancy, childbirth, postpartum and newborn care: A guide for essential practice.
Cita Chicago (17th ed.)World Health Organization. Pregnancy, Childbirth, Postpartum and Newborn Care: A Guide for Essential Practice.
Cita MLA (8th ed.)World Health Organization. Pregnancy, Childbirth, Postpartum and Newborn Care: A Guide for Essential Practice.
Atenció: Aquestes cites poden no estar 100% correctes.