World Health Organization. Pregnancy, childbirth, postpartum and newborn care: A guide for essential practice.
Chicago-referens (17:e uppl.)World Health Organization. Pregnancy, Childbirth, Postpartum and Newborn Care: A Guide for Essential Practice.
MLA-referens (8:e uppl.)World Health Organization. Pregnancy, Childbirth, Postpartum and Newborn Care: A Guide for Essential Practice.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.