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Cape of Good Hope. Report of the Medical Officer of Health, 1898, 1899.
Cape of Good Hope. Report of the trustees of the South African Museum, 1898.
FamilySearch: John Stephen Gibbons. https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSQ8-4SW7-N?view=index&personArk=/ark:/61903/1:1:QGLJ-4KLY&action=view
Google scholar. http://scholar.google.co.za Publications by J.S. Gibbons.
Herbert, D. & Kilburn, D. Field guide to the land snails and slugs of eastern South Africa. Pietermaritzburg: Natal Museum, 2004.
List of licensed medical practitioners in the Cape Colony... Cape of Good Hope Government Gazette, 9 January 1885, pp. 41-45.
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Verdcourt, B. John S.
Gibbons, 1851-? The Conchologists
Newsletter, December 1981, No. 79, pp. 344-348. Retrieved from http://archive.is/AhKfq on 2017-1-12.