Thepsawat, Chutima. 2014. “The Readiness of Management in Learning Process towards the ASEAN Economic Community in Secondary School of Ratchaburi Province”. Muban Chombueng Rajabhat University Research Journal (Humanities and Social Science) 2 (1). Ratchaburi, Thailand:29-42. https://so03.tci-thaijo.org/index.php/hssj/article/view/272805.