Bath, Gareth(Article originally published in VetNews / VetNuus, August 2023, the monthly magazine of the South African Veterinary Association, 2023-08)
Magona, Joseph W.; Mayende, J.S.P.(Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2002)