ทองคำ ส. and ศำสนนันทน์ ม. (2019) “Supply Chain of Organic Vegetables: A Case Study of Food Safety Program in Hospital”, Thai Interdisciplinary and Sustainability Review. Bangkok, Thailand, 3(2), pp. 23–34. available at: https://so03.tci-thaijo.org/index.php/JIRGS/article/view/227379 (accessed: 12 September 2026).