Chaimongkol, T. . (2020). Study of Collocation Occurrence in English Essay Writing: The Case Study of Three Northern University. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University, 14(2), 578–592. Retrieved from https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/236675