Ingchatcharoen, Sukolrat, and Thanyasinee Laosum. 2022. “A Development of Measurement Model and Online Citizenship Test for Students of Sukhothai Thammathirat Open University”. Journal of Graduate Research 13 (1):45-59. https://so02.tci-thaijo.org/index.php/banditvijai/article/view/251731.