Não informado. Sheet maps. Geological Survey of South Africa, Department of Mines.
Chicago-Zitierstil (17. Ausg.)Não informado. Sheet Maps. Pretoria, Africa do Sul: Geological Survey of South Africa, Department of Mines.
MLA-Zitierstil (8. Ausg.)Não informado. Sheet Maps. Geological Survey of South Africa, Department of Mines.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.