Smith, Natnaree, and Nantida Dangkhaw. “Food Sanitation Operating Conditions of Food Handlers in Bangkok’s Five-Star International Chain Hotels”. Dusit Thani College Journal 16, no. 3 (December 31, 2022): 106–121. Accessed May 30, 2024. https://so01.tci-thaijo.org/index.php/journaldtc/article/view/264515.