1. Veld Types of South Africa.;Acocks;Mem. bot. Surv. S. Afr.,1975
2. Die wisselwerking tussen die habitat en ‘n aantal grasgemeenskappe in die suidoostelike Oranje-Vrystaat;Bosch,1974
3. The grasses of the Suikerbosrand Nature Reserve: Their habitat preferences and synecological significance;Bredenkamp;Proc. Grassl. Soc. S. Afr.,1977
4. ‘n Plantekologiese studie van die Manyeleti-wildtuin;Bredenkamp,1982
5. Ecological interpretation of plant communities by classification and ordination of quantitative soil characteristics;Bredenkamp;Bothalia,1983