Chiranorawanit, Sukit, Surachai Meechan, and Wilailak Langka. 2022. “THE DEVELOPMENT OF DIAGNOSTIC TEST ON ALGEBRA FOR GRADE 9th STUDENTS IN ENGLISH PROGRAMME”. Journal of Buddhist Anthropology 7 (8):28-40. https://so04.tci-thaijo.org/index.php/JSBA/article/view/260414.