Sungtong, Badee, and Boonchuay Srithammasak. “Timesheet Management System: A Case Study of SCI Professional Service Company Limited”. Journal of Advanced Development in Engineering and Science 9, no. 25 (August 28, 2023): 13–24. accessed December 9, 2025. https://ph03.tci-thaijo.org/index.php/pitjournal/article/view/918.