List of sources:
A uthor 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.
FamilySearch: Gilles Van De Wall De Kock. https://www.familysearch.org/ark:/61903/1:1:QGTF-5V81
Janse, A.J.T. A short history of the South African Biological Society. South African Biological Society Pamphlet, 1939, No. 10, pp. 49-58.
Robinson, E.M. In Memoriam: G. Van de Wall De Kock. Journal of the South African Veterinary Association, 1973. Vol. 44(4), pp. 463-464.
South African bibliography to the year 1925. London: Mansell, 1979.
South African Journal of Natural History, 1918, Vol. 1(1), pp. 8-15: Roll of Foundation Members [of the SA Biological Society].
South African Journal of Science, 1915-1929, Vol. 12-26.