1. Abakah, E. 1978. Dialect Differences Between Iguae Mfantse and Bɔrbɔr (Nkusukum) Mfantse. Unpublished Long Essay. University of Ghana
2. Abakah, E. 1993. Some Aspects of the Phonology of the Mfantse Dialect of Akan. Unpublished MPhil Thesis. University of Ghana
3. Abakah, E. 2002. Remarks on the Akan Vocalic Inventory. In F. Ameka & E. Osam (eds.), New Directions in Ghanaian Linguistics: Essays in Honour of the 3Ds 243-263. Accra: Black Mast Ltd
4. Abakah, E. 2003. The Segmental and Tone Melodies of Akan. Ph.D Dissertation. Trondheim: Norwegian University of Science & Technology
5. Abakah, E. 2004. Where Have All the Consonantal Phonemes of Akan Gone? Journal of Philosophy & Culture 1.2, 21-48