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Duckitt, John (1991). «The development and validation of a subtle racism scale in South Africa» 4 ed. South African Journal of Psychology. 21: 233–239. doi:10.1177/008124639102100406. S2CID145589715
statssa.gov.za
«Census 2001 at a glance». Statistics South Africa. Consultado em 7 de julho de 2008. Arquivado do original em 12 de dezembro de 2005