Não informado. Sheet maps. Geological Survey of South Africa, Department of Mines.
Style de citation Chicago (17e éd.)Não informado. Sheet Maps. Pretoria, Africa do Sul: Geological Survey of South Africa, Department of Mines.
Style de citation MLA (8e éd.)Não informado. Sheet Maps. Geological Survey of South Africa, Department of Mines.
Attention : ces citations peuvent ne pas être correctes à 100%.