Não informado. (1964). Coal, gold and base minerals of Southern Africa. Pithead Press.
Style de citation Chicago (17e éd.)Não informado. Coal, Gold and Base Minerals of Southern Africa. Johannesburg, Africa do Sul: Pithead Press, 1964.
Style de citation MLA (8e éd.)Não informado. Coal, Gold and Base Minerals of Southern Africa. Pithead Press, 1964.
Attention : ces citations peuvent ne pas être correctes à 100%.