Rajend Mesthrie (ed.). 2002. Language in South Africa. Cambridge: Cambridge University Press. (paperback) (et utvalg) ISBN-10:0511031467 ISBN-13:9780511031467 Et utvalg på ca. 300 sider.
Alamin M. Mazrui. 2004. English in Africa. After the Cold War. Clevedon: Multilingual Matters Ltd. (paperback) ca 130 sider. ISBN 1-85359-689-2
Herman M. Batibo. 2005. Language Decline and Death in Africa. Clevedon: Multilingual Matters Ltd. (paperback) ca 160 sider ISBN 1-85359-808-9
Kompendium
Gfeller, Elizabeth: Language Equality, Awasa 1999
Yri, KM: Cleft Sentences in Amharic, with special reference to reference, In: Edzard L. and Jan Retsö (ed): Current Issues in the Analysis of Semitic Grammar and Lexicon I, Harrassowitz 2005 ISBN 0567-4980
Yri, K.M. : The Polysemy of a Grammatical Construction (Upublisert manus)
Yri K.M. : Orthography and Phonology in Sidaamu Afoo. Journal of Ethiopian Studies, Vol XXXVII No 1, June 2004