APA (7e ed.) Bronvermelding

Não informado. (1962). Annals of the Geological Survey. Republic of South Africa, Department of Mines.

Chicago (17e ed.) Bronvermelding

Não informado. Annals of the Geological Survey. Pretoria, Africa do Sul: Republic of South Africa, Department of Mines, 1962.

MLA (8e ed.) Bronvermelding

Não informado. Annals of the Geological Survey. Republic of South Africa, Department of Mines, 1962.

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