Kittipanya-ngam, Pichawadee, Anunya Chanthavutti, and Kittiwat Sirikasemsuk. “Applying Lean Concept and Software Packages to Support Critical Issue Monitoring Process in Office”. Engineering and Technology Horizons 40, no. 1 (March 31, 2023): 10–26. accessed September 10, 2026. https://ph01.tci-thaijo.org/index.php/lej/article/view/248201.