APA (7e ed.) Bronvermelding

Não informado. (2004). SA mining: South African mining, coal, gold, and base minerals. Johnnic Publishing.

Chicago (17e ed.) Bronvermelding

Não informado. SA Mining: South African Mining, Coal, Gold, and Base Minerals. Pinegowrie, Africa do Sul: Johnnic Publishing, 2004.

MLA (8e ed.) Bronvermelding

Não informado. SA Mining: South African Mining, Coal, Gold, and Base Minerals. Johnnic Publishing, 2004.

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