Kessalee, K., and K. Kwiecien. “Digital Literacy in the Workplace for Supporting Staff, Loei Rajabhat University”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University, vol. 12, no. 2, Jan. 2018, pp. 503-14, https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/105148.