1. A Handbook on Biotelemetry and Radio-tracking;Amlaner,1980
2. The assessment of pain in animals;Bateson;Animal Behaviour,1991
3. Berry, H.H., 1980. Behavioural and Eco-physiological Studies on Blue Wildebeest (Connochaetes taurinus) at the Etosha National Park. PhD thesis, Cape Town University, Cape Town.
4. Life History/VORTEX Modelling: Working Group Report-Cheetahs in Namibia, Species Survival Commission;Berry,1996
5. Burney, D.A., 1980. The Effects of Human Activities on Cheetah (Acinonyx jubatus) in the Mara region of Kenya. MSc Thesis, University of Nairobi, Nairobi.