Moonsanr, Tanandonr, Wikrom Wonnasuthi, and Danu Wiroteurairuang. “Development of Pumpkin Ripeness Classification System by Integrating Image and Sound Data Using Machine Learning Techniques”. Journal of Engineering and Industrial Technology, Kalasin University 3, no. 4 (August 31, 2025): 59–75. accessed October 7, 2026. https://ph03.tci-thaijo.org/index.php/JEIT/article/view/3917.