Chaowana, Pennapa, Chatree Homkhiew, Worapong Boonchouytan, Thanakorn Damsud, and Boonrad Boonradsamee. 2023. “Product costing for Eco-Food Packaging from Nipa Palm Leaves of Thung Krabue Ruam Jai Pattana Community Enterprise Yan Ta Khao District, Trang Province”. Journal of Humanities and Social Sciences Thonburi University 17 (3):17-30. https://so03.tci-thaijo.org/index.php/trujournal/article/view/266842.