List of sources:
Charles James Hill Aitken. Lives of the First World War. Retrieved on 17 November 2022 from https://livesofthefirstworldwar.iwm.org.uk/lifestory/665212
General directory of South Africa, 1908-1911.
Google scholar. http://scholar.google.co.za Publications by C. J. H. Aitken.
Medical and Pharmacy Register for the Colony of the Cape of Good Hope, 1907.
Minor complaints associated with dilatation of the stomach. Edinburgh Research Archive: Edinburgh Medical School thesis and dissertation collection. Retrieved on 17 November 2022 from https://era.ed.ac.uk/handle/1842/25367?show=full
Pietermaritzburg Archives Repository, Vol. NMC 34: [List of medical practitioners, dentists, and chemists and druggists registered in the Cape Colony as on 31 December 1915].
South African Medical Record, 1903-1908, Vol. 1-6; 1916, Vol. 14.