Martins, Jeremy (2007). "Citizenship, "Civilisation", and the Creation of South Africa's Immorality Act, 1927". South African Historical Journal. 59 (1): 223–241. doi:10.1080/02582470709464779. S2CID144954485.
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Martins, Jeremy (2007). "Citizenship, "Civilisation", and the Creation of South Africa's Immorality Act, 1927". South African Historical Journal. 59 (1): 223–241. doi:10.1080/02582470709464779. S2CID144954485.