Chantaramard, Somlak, Wanthiwa Chiangtung, Apinya Jitmanowan, and Rattikun Buachan. 2023. “The Development of English Vocabulary Learning Materials for Non-Major Teachers to Enhance the English Learning Achievement: A Case Study of Pratomsuksa 4-6 Students at Rimkhongwittaya School, Chiang Rai Province”. Academic MCU Buriram Journal 8 (3):88-103. https://so06.tci-thaijo.org/index.php/ambj/article/view/266627.