1. Ajolore, O. (1972). When vowel clusters occur in Yoruba. Paper presented at the Third Annual Conference on African Linguistics, Indiana University.
2. Akinlabi, A. (1993). Underspecification and the phonology of Yoruba /r/. Linguistic Inquiry, 24(1), 139–160.
3. Akinlabi, A. To appear. Yoruba: A phonological grammar. The W.E. B. Du Bois Series of African Language Grammars. Series editor: John Mugane. Center for African Studies, Harvard University.
4. Akinlabi, A. (2003). Sonorant nasalization in Yoruba Deverbal Nouns, Actes du 3e Congrès Mondial de Linguistique Africaine, Lome 2000. In K. K. Lebikaza (Ed.), (pp. 3–19). Ruediger Koeppe Verlag, Cologne.
5. Archangeli, D., & Pulleyblank, D. (1989). Yoruba vowel harmony. Linguistic Inquiry., 20(2), 173–217.