Thongkliang, Khanitha, Jirapat Kongsang, and Yupamat Suksai. 2022. “Food stall sanitation and coliform bacterial contamination in market meat Khuan Koei Subdistrict, Ron Phibun District Nakhon Si Thammarat Province”. Chalermkarnchana Academic Journal 9 (1). Sisaket,Thailand:48. https://so19.tci-thaijo.org/index.php/cnujournal/article/view/216.