Chaowana, P., C. Homkhiew, W. Boonchouytan, T. Damsud, and B. Boonradsamee. “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, vol. 17, no. 3, Oct. 2023, pp. 17-30, https://so03.tci-thaijo.org/index.php/trujournal/article/view/266842.