Praimahaniyom, Thirawit, and Banjong Chairinkom. 2019. “THE EFFECTIVENESS OF THE GROUPS MODEL IN ENHANCING THE STUDENT’S ENGLISH COMMUNICATION SKILL AT KAMPHAENG PHET RAJABHAT UNIVERSITY, MAESOT”. Journal of Education and Innovation 23 (3):48-63. https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/172561.