Kromnoi, Anan, Kittipich Khampaenjiraroch, and Radchaneeboon Neadpuckdee. 2020. “CIPP MODEL EVALUATION OF FOUNDATION ENGLISH (E 21101) MATTHAYOM 1 FOLLOWING CORE CURRICULUM 2008 USING CIPP MODEL”. Journal of Graduate MCU KhonKaen Campus 7 (4):424-43. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/244094.