เย็นบุญธรรม ปราโมทย์. “FOOD SAFETY SITUATION, KNOWLEDGE, ATTITUDE AMONG FOOD SELLER IN THE FLEA MARKETS, PHITSANULOK PROVINCE”. Pathumthani University Academic Journal 14, no. 1 (June 26, 2022): 12–27. accessed September 14, 2026. https://so05.tci-thaijo.org/index.php/ptujournal/article/view/250570.