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.
FamilySearch: Philippus Stefanus Snyman. https://www.familysearch.org/ark:/61903/3:1:3QHV-V38J-TJTY?view=index&personArk=/ark:/61903/1:1:6NZC-J4K6&action=view&cc=3511741&lang=en&groupId= AND https://ancestors.familysearch.org/en/G3QW-3F5/philippus-stefanus-snyman-1898
Google scholar. http://scholar.google.co.za/ , publications
by P.S. Snyman.
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.
Posthumus, P.J. Past veterinarians in South Africa (10th edition), Vol.2, [1992].
Robinson, E.M. The development of veterinary bacteriology in South Africa. South African Journal of Science, 1932, Vol. 29, pp. 41-53.
Snyman, P.S. The problem of bovine tuberculosis in the Union of South Africa. Journal of the South African Veterinary Medical Association, 1955, Vol. 26(4), pp. 241-245.