Buys, D. 2000. The status of the southern white rhino (Ceratotherium simum simum) on private land in South Africa in 1999. Pachyderm 28: 60-64, tables 1-3.
Buys, D. 1999. Survey: white rhinos on private land (October 1999). In: Anonymous 1999. Proceedings of a workshop on conservation of African rhinos on private land through utilization, Onderstepoort, South Africa, 8 & 9 October 1999. Johannesburg, African Rhino Owners Association. pp. 1-7.
Buys, D. 1998. White rhinos on private land in South Africa 1997. Johannesburg, Report to the African Rhino Owners Association. pp. 1-8, tables 1-4.
Buys, D.; Papenfus, T. 1996. White rhinos on private land in South Africa. Johannesburg, Report to Rhino and Elephant Foundation. pp. i, 1-14, figs. 1-2, tables 1-3.
Buys, D.; Anderson, J. 1989. White rhinos on private land in South Africa. REF Journal 2: 26-31, figs. 1-2.
Buys, D. 1987. A summary of the introduction of white rhino onto private land in the Republic of South Africa. Johannesburg, Report to Rhino and Elephant Foundation. [not paginated].
Buys, D. 1927. Het hoofd (prauwen) bivak Long Petah. In: Endert, F.H. 1936. Midden-Oost-Borneo Expeditie 1925. Weltevreden, G. Kolff and Co. pp. 41-54, figs. 16-21.






