APA (7e ed.) Bronvermelding

Não informado. (1957). Nigerian Geographical Journal. Nigerian Geographical Association.

Chicago (17e ed.) Bronvermelding

Não informado. Nigerian Geographical Journal. Ibadan, Nigeria: Nigerian Geographical Association, 1957.

MLA (8e ed.) Bronvermelding

Não informado. Nigerian Geographical Journal. Nigerian Geographical Association, 1957.

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