Nonthamand, N., Suaklay, N., Pumila, K., Intha, S., & Promwong, N. (2021). A survey of Online Learning Problems in General Education Course of University of Phayao students. ECT Education and Communication Technology Journal, 16(20), 61–73. Retrieved from https://so01.tci-thaijo.org/index.php/ectstou/article/view/245679