Sornmanee, Kanokwan, and Chot Bodeerat. 2022. “A Study of Knowledge, Attitude and Behavior on Solid Waste Management of People in Tha Yiem Subdistrict Saklek District Phichit Province”. Journal of Modern Learning Development 7 (5):166-78. https://so06.tci-thaijo.org/index.php/jomld/article/view/255009.