สารทองท., ศุภวราสุวัฒน์ป., and สุนทรกนกพงศ์ว. “DEVELOPMENT OF AN ONLINE GRADING AND SUBMISSION SYSTEM: A CASE STUDY OF VOCATIONAL EDUCATION INSTITUTE CENTER 1”. Journal of Industrial Education, Vol. 15, no. 1, Apr. 2016, pp. 98-05, https://www.tci-thaijo.org/index.php/JIE/article/view/122269.