Thabngern, Napatharapee, Lamai Romyen, and Sanyasorn Swasthaisong. 2022. “Effects of Waste Management Knowledge and People’s Participation on People’s Waste Management Efficiency in Sakon Nakhon Municipality”. Interdisciplinary Academic and Research Journal 2 (5):733-54. https://doi.org/10.14456/iarj.2022.122.