Não informado. (2003). South African mining, coal, gold & base minerals. Thomson Publication.
Style de citation Chicago (17e éd.)Não informado. South African Mining, Coal, Gold & Base Minerals. Johannesburg, Africa do Sul: Thomson Publication, 2003.
Style de citation MLA (8e éd.)Não informado. South African Mining, Coal, Gold & Base Minerals. Thomson Publication, 2003.
Attention : ces citations peuvent ne pas être correctes à 100%.