Não informado. (2004). SA mining: South African mining, coal, gold, and base minerals. Johnnic Publishing.
Style de citation Chicago (17e éd.)Não informado. SA Mining: South African Mining, Coal, Gold, and Base Minerals. Pinegowrie, Africa do Sul: Johnnic Publishing, 2004.
Style de citation MLA (8e éd.)Não informado. SA Mining: South African Mining, Coal, Gold, and Base Minerals. Johnnic Publishing, 2004.
Attention : ces citations peuvent ne pas être correctes à 100%.