Jitpraneechai, N. “Noun Phrase Complexity in Academic Writing: A Comparison of Argumentative English Essays Written by Thai and Native English University Students”. LEARN Journal: Language Education and Acquisition Research Network, vol. 12, no. 1, Jan. 2019, pp. 71-88, https://so04.tci-thaijo.org/index.php/LEARN/article/view/168582.