สมพงษ์ อุทุมพร. “Water Quality After Removing Shops at Klong Ong Ang”. Research on Modern science and Utilizing Technological Innovation Journal (RMUTI Journal) 11, no. 2 (August 31, 2018): 142–153. accessed September 19, 2026. https://ph01.tci-thaijo.org/index.php/rmutijo/article/view/167716.