エチオピア人を白く洗う
"Washing the Ethiopian white: conceptualising black skin in Renaissance England", Anu Korhonen, in Black Africans in Renaissance Europe, (Cambridge University Press, 2005), Ch.4, pp 94-112
Racism on the Victorian Stage: Representation of Slavery and the Black Character, Hazel Waters, Cambridge University Press, 2007
Imperial persuaders: images of Africa and Asia in British advertising, Anandi Ramamurthy, Manchester University Press, 2003
“From Greek Proverb to Soap Advert: Washing the Ethiopian”, Jean Michel Massing, Journal of the Warburg and Courtauld Institutes, London 1995, Vol. 58, pages 180-201
"19th century AD", H.L. Malchow, Past & Present, May 1993