Yeunyongkul, P., C. Duantubrat, W. Duwong, S. Wongpanich, and N.T. Thinh. “Performance evaluation of the semi-automatic cleaner for split type air conditioner”. Journal of Research and Applications in Mechanical Engineering 8, no. 1 (June 2, 2020): 77–83. accessed May 11, 2025. https://ph01.tci-thaijo.org/index.php/jrame/article/view/234299.