Sutherland, John: Memoir respecting the Kaffers, Hottentots, and
Bosjemans, of South Africa (1845).
- http://www.archive.org/details/memoirrespectin00suthgoog
Atlas of Health Statistics of the African Region 2011.
World Health Organization. Regional Office for Africa, 2011.
- http://apps.who.int/medicinedocs/documents/s18863en/s18863en.pdf
Indians Overseas A guide to source materials in the India Office
Records for the study of Indian emigration 1830-1950.
- http://www.bl.uk/reshelp/pdfs/indiansoverseas.pdf