APA (7e ed.) Bronvermelding

Não informado. (1964). Coal, gold and base minerals of Southern Africa. Pithead Press.

Chicago (17e ed.) Bronvermelding

Não informado. Coal, Gold and Base Minerals of Southern Africa. Johannesburg, Africa do Sul: Pithead Press, 1964.

MLA (8e ed.) Bronvermelding

Não informado. Coal, Gold and Base Minerals of Southern Africa. Pithead Press, 1964.

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