Kitirojapn, Pongsak, Sakol Teeravarunyou, Kodchahem Kamolwit, and Pavinee Pattanachan. 2025. “Development of Sustainable Packaging Cushions from Coconut Waste Using 3D Printing Techniques: 10.32526/ennrj/23/20240224”. Environment and Natural Resources Journal 23 (2). Nakhon Pathom, Thailand:132-41. https://ph02.tci-thaijo.org/index.php/ennrj/article/view/255399.