Piriyapun, Kusuma. “The Establishment of Buffer Zone According to the Factory Act by Geographic Information System: A Case Study of Tha Kham Subdistrict, Bang Pakong District, Municipality Chachoengsao Province”. Journal of Information Science Research and Practice 40, no. 4 (November 15, 2022): 31–55. Accessed May 2, 2024. https://so03.tci-thaijo.org/index.php/jiskku/article/view/255952.