APA (7e ed.) Bronvermelding

Não informado. (2003). South African mining, coal, gold & base minerals. Thomson Publication.

Chicago (17e ed.) Bronvermelding

Não informado. South African Mining, Coal, Gold & Base Minerals. Johannesburg, Africa do Sul: Thomson Publication, 2003.

MLA (8e ed.) Bronvermelding

Não informado. South African Mining, Coal, Gold & Base Minerals. Thomson Publication, 2003.

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