1. Alford, C. J., 1890. Note on a salt deposit 25 miles north of Pretoria. Witwatersrand Mining and Metallurgical Review 10: 1–5.
2. Monographiae Biologicae,1979
3. Allanson, B. R., 1981. The coastal lakes of southern Africa. In J. H. Day (ed.) Estuarine Ecology with Special Reference to Southern Africa. Ch. 15. Balkema, Cape Town & Rotterdam.
4. Allanson, B. R., R. C. Hart, J. H. O'Keefe & R. D. Robarts, 1990. Inland Waters of Southern Africa: An Ecological Perspective. Monographiae Biologicae.
5. A.P.H.A., 1975. Standard Methods for the Examination of Water and Wastewater. 14th Edition. American Public Health Association, Washington, D.C.