Trinant, K. ., and W. Kijpoonphol. “Lexical Collocations in a Sample Corpus of Tourism Research Articles (SCTRA)”. NKRAFA Journal of Humanities and Social Sciences, vol. 9, Nov. 2021, pp. 94-108, https://so04.tci-thaijo.org/index.php/KANNICHA/article/view/249524.