เย็นบุญธรรม ปราโมทย์. 2022. “FOOD SAFETY SITUATION, KNOWLEDGE, ATTITUDE AMONG FOOD SELLER IN THE FLEA MARKETS, PHITSANULOK PROVINCE”. Pathumthani University Academic Journal 14 (1):12-27. https://so05.tci-thaijo.org/index.php/ptujournal/article/view/250570.