Borthwick, M.R.

Borthwick, M.R. 1986. Habitat use by the white rhinoceros in relation to other grazing ungulates in Pilanesberg Game Reserve, Bophuthatswana. Johannesburg, University of Witwatersrand, Dissertation submitted to the Faculty of Science. pp. 1-183.

Borthwick, M.R. 1982. The Pilanesberg grazing system – habitat use and carrying capacity with special reference to the white rhinoceros. Tshomarelo News 5: 14-18, fig. 1.