Promrat, Thawatchai, and Nanthawat khampha. 2023. “Technician Section Repairing Information System Using Application on Smartphone: Case Study Phranakhon Si Ayutthaya Rajabhat University”. Kalasin University Journal of Science Technology and Innovation 2 (1):75-89. https://doi.org/10.14456/ksti.2023.5.