United Nations. (2006). United nations peace keeping: Meeting new challenges. United Nations.
Citazione stile Chigago Style (17a edizione)United Nations. United Nations Peace Keeping: Meeting New Challenges. New York: United Nations, 2006.
Citatione MLA (9a ed.)United Nations. United Nations Peace Keeping: Meeting New Challenges. United Nations, 2006.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.