List of sources:
Author and Subject Index to the Government Veterinary Reports of the Transvaal and Union of South Africa (1903-1932). Pretoria: Department of Agriculture, June 1937.
Author and Subject Index to the Onderstepoort Journal of Veterinary Science and Animal Industry (1933-1950) and the Onderstepoort Journal of Veterinary Research (1951-1968). Pretoria: Department of Agriculture, June 1969.
Google scholar. http://scholar.google.co.za Publications by W.J.B. Green.
Journal of the South African Veterinary Medical Association, 1927, Vol. 1(1), pp. 84-85: List of members; 1929, Vol. 1(3), pp. 77-82: Register of veterinarians of the Union of South Africa.
National Archives Pretoria (TAB). Source MHG, Vol. 0, Ref. 93102. Death notice, William John Burger Green.
[Obituary] William John Burger Green (1901-1936). Journal of the South African Veterinary Medical Association, 1936, Vol. 7, pp. 131-132.
Posthumus, P.J. Past Veterinarians in South Africa, Vol. 1, 10th edition, [1992].