1. Aarts, B (2001). English Syntax and Argumentation. 2nd ed. New York: Palgrave, 2001.
2. Abdulhamid, Y I. (2015). A Syntactic Analysis of the Sentence Structure of Igala Language. An Unpublished B.A.. Project, Nasarawa State University, Keffi, August, 2015.
3. Arokoyo, B (2016). A Survey of Focus Constructions in Owe”. An Article, Department of Linguistics and Nigerian Languages. Accessed 15th July.
4. Burton- Roberts, N (2011). Analysing Sentences: An Introduction to English Syntax, 3rd Edition.London: Pearson Education Limited, 2011.
5. Carnie, A. (2007). Syntax: A Generative Introduction, 2nd Edition. Oxford: Blackwell Publishing. 2007.