APA (7e ed.) Bronvermelding

Não informado. (1962). Foreign trade statistics for Africa. United Nations, Economic Commission for Africa.

Chicago (17e ed.) Bronvermelding

Não informado. Foreign Trade Statistics for Africa. New York: United Nations, Economic Commission for Africa, 1962.

MLA (8e ed.) Bronvermelding

Não informado. Foreign Trade Statistics for Africa. United Nations, Economic Commission for Africa, 1962.

Let op: Deze citaties zijn niet altijd 100% accuraat.