H. , L. Et, W. , and J. R. , Auxiliary Focus, Studies in African Linguistics, issue.15, pp.133-73, 1984.

J. , R. Jaggar, and J. Philip, Semantic Interpretation in Generative GrammarThematic Emphasis in Hausa, pp.63-74, 1972.

J. Lecarme, The Phonology and Syntax of WH-Expressions in TangaleFocus en somali : syntaxe et interprétation, Studies in the Linguistic Sciences Linguistique africaine 7, pp.33-64, 1991.

H. Aspects and . Tone, Doctoral dissertation (UCLA Working Papers in Phonetics 32), University of California

T. Balewa, A. Abubakar, N. N. Tuller, and L. Anne, Shehu UmarVariations in focus constructions, Z. Frajzyngier (éd.) Current Progress in Chadic Linguistics, pp.9-33, 1955.