World Health Organization. Safe motherhood Care in normal birth: A practical guide. World Health Organization.
Chicago-referens (17:e uppl.)World Health Organization. Safe Motherhood Care in Normal Birth: A Practical Guide. Geneva: World Health Organization.
MLA-referens (8:e uppl.)World Health Organization. Safe Motherhood Care in Normal Birth: A Practical Guide. World Health Organization.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.