The geology of the archaean granitoid-greenstone terrane in the vicinity of Three Sisters, Barberton Greenstone Belt report on mapping and geological studies between 1990 and 1994 - Kohler, Ernst A. (Council for Geoscience, South Africa, 2003)
Kt.-Beil. u.d.T.: Kohler, Ernst A.: Geological map of the granitoid-greenstone terrane in the vicinity of Three Sisters, Barberton Mountain Land