meechan, suthikarn . “Voting Behavior and Attitude Toward Vote-Buying in a Northeastern Area: Case Study in Maha Sarakham”. King Prajadhipok’s Institute Journal, vol. 11, no. 3, Sept. 2020, pp. 110-28, https://so06.tci-thaijo.org/index.php/kpi_journal/article/view/244338.