Porter, V. & Mason, I. L. (2002). Mason’s World Dictionary of livestock breeds, types and varieties (5th ed.). Wallingford, Oxfordshire, UK: CABI.
Porter, V., Alderson, L., Hall, S. J. G., & Sponenberg, D. P. (2016). Mason’s World Encyclopedia of Livestock Breeds and Breeding: 2 volume pack (1st ed.). Wallingford, Oxfordshire, UK: CABI.
Prins, H. H. T. (2012). Ecology and Behaviour of the African Buffalo: Social inequality and decision making. Berlin, Germany: Springer Science & Business Media.
Rege, J. E. O. (1999). The state of African Cattle Genetic Resources I. Classification Framework and identification of threatened and extinct breeds. Animal Genetic Resources Information, 25, 1–25. https://doi.org/10.1017/s1014233900003448
Spinage, C. A. (2003). Cattle Plague: A History. Berlin, Germany: Springer Science & Business Media.