Não informado. Sheet maps. Geological Survey of South Africa, Department of Mines.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Sheet Maps. Pretoria, Africa do Sul: Geological Survey of South Africa, Department of Mines.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Sheet Maps. Geological Survey of South Africa, Department of Mines.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.