Sinlaparatsamee, Kriangkrai, Phuwadol Rungreung, and Watcharaporn Watcharaporn Phromphonmuang. 2024. “Develop a sales system for OTOP products at Thitima Shop”. Chalermkarnchana Academic Journal 10 (1). Sisaket,Thailand:139-61. https://so19.tci-thaijo.org/index.php/cnujournal/article/view/1140.