1. Adger, David (2003). Core Syntax: A Minimalist Approach, Oxford University Press. Core Linguistics.
2. Vowel harmony in Nkami;Asante;Journal of West African Languages,2016
3. Kinande vowel harmony: Domains, grounded conditions and one-sided alignment;Archangeli;Phonology,2002
4. Object sharing and projection in serial verb constructions;Baker;Linguistic Inquiry,1989
5. Baković, Eric (2000). Harmony, Dominance and Control. [Ph.D. thesis, Department of Linguistics, Rutgers University].