World Health Organization. (2009). Monitoring emergency obstetric care: A handbook. World Health Organization.
Citazione stile Chigago Style (17a edizione)World Health Organization. Monitoring Emergency Obstetric Care: A Handbook. [Geneva]: World Health Organization, 2009.
Citatione MLA (9a ed.)World Health Organization. Monitoring Emergency Obstetric Care: A Handbook. World Health Organization, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.