ท่าสอน อาเฟนดี, and กาญจนะ ระพี. “A Risk Analysis of Supply Chain Ribbed Unsmoked Natural Rubber Sheet : Case Study of the Province of Narathiwat”. Frontiers in Engineering Innovation Research 1 (June 30, 2014): 35–41. accessed April 13, 2025. https://ph01.tci-thaijo.org/index.php/jermutt/article/view/242074.