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Fabian, Johannes 1971 JAMAA. A Charismatic Movement in Katanga. Evanston: Northwestern University Press.

Gumperz, John J. 1982 Discourse Strategies. Cambridge: Cambridge University Press.

Ji Feng Yuan, Koenraad Kuiper and Shu Shaogu 1990 "Language and Revolution: Formulae of the Cultural Revolution." Language in Society , 19/1, 61-80

Ohly, Rajmund 1987 Swahili-English Slang Pocket Dictionary. Wien: AFRO-PUB.