Soil and Irrigation Research Institute (Pretoria). (1978). Land type series 1:250 000: Republic of South Africa = Landtipereeks. Directorate of Agricultural Information, Dep. of Agriculture and Water Supply.
Chicago-Zitierstil (17. Ausg.)Soil and Irrigation Research Institute (Pretoria). Land Type Series 1:250 000: Republic of South Africa = Landtipereeks. Pretoria: Directorate of Agricultural Information, Dep. of Agriculture and Water Supply, 1978.
MLA-Zitierstil (9. Ausg.)Soil and Irrigation Research Institute (Pretoria). Land Type Series 1:250 000: Republic of South Africa = Landtipereeks. Directorate of Agricultural Information, Dep. of Agriculture and Water Supply, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.