Khuncharo, Apirat, Somkhit Suk-erb, and Muntana Nakornriab. 2019. “The PET Bottle Processing Guidelines for Application in Handicrafts”. Academic Journal of Mahamakut Buddhist University Roi Et Campus 9 (2):56-68. https://so01.tci-thaijo.org/index.php/AJMBU/article/view/244687.