APA (7e ed.) Bronvermelding
United Nations Environment Programme. (2003). Tunza: Acting for a better world. United Nations Environment Programme.
Chicago (17e ed.) Bronvermelding
United Nations Environment Programme. Tunza: Acting for a Better World. [Nairobi, Kenya]: United Nations Environment Programme, 2003.
MLA (9e ed.) Bronvermelding
United Nations Environment Programme. Tunza: Acting for a Better World. United Nations Environment Programme, 2003.
Let op: Deze citaties zijn niet altijd 100% accuraat.