Keyuravong, S., Seyitkuliyev, D., & Bunsom, T. (2019). Investigation of grammatical errors committed by Turkmen learners of English. Journal of Humanities and Social Sciences University of Phayao, 8(1), 96 - 117. Retrieved from https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/205275