Skulcharoen, P. “The Application of PDCA Cycle in Teaching Evaluation of Macroeconomics During 2000-2004: A Case Study at Sriracha Campus”. Kasetsart Journal of Social Sciences, vol. 26, no. 2, Dec. 2005, pp. 165-76, https://so04.tci-thaijo.org/index.php/kjss/article/view/246258.