World Health Organization. (1998). Postpartum care of the mother nad newborn: A practical guide. World Health Organization.
Citazione stile Chigago Style (17a edizione)World Health Organization. Postpartum Care of the Mother Nad Newborn: A Practical Guide. Geneva: World Health Organization, 1998.
Citatione MLA (8a ed.)World Health Organization. Postpartum Care of the Mother Nad Newborn: A Practical Guide. World Health Organization, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.