1. Adamo, G. E. (2007). Nigerian English. English Today, 23(1), 42–47.
2. Bache, C., & Davidsen-Nielsen, N. (1997). Mastering English: An advanced grammar for non-native and native speakers. Berlin: Mouton de Gruyter.
3. Beckner, P., Ellis, N. C., Blythe, R., Holland, J., Bybee, J., Ke, J., et al. (2009). Language is a complex adaptive system. Language Learning, 59(s1), 1–26.
4. Bergen, B., & Binsted, K. (2017). Embodied grammar and humor. In G. Brône, K. Feyaerts, & T. Veale (Eds.), Cognitive linguistics and humor research (pp. 49–68). Berlin: Mouton de Gruyter.
5. Blench, R. (2006). A dictionary of Ghanaian English. Retrieved from http://www.rogerblench.info/Language/English/Ghana_English_Dictionary.pdf. 2 Jan 2018.