Hinkaew T. Motivation Factor Affecting Work Effectiveness of Personnel Attached to Muang Udon Thani Municipality, Udon Thani Province . RMUTTO Social Journal [internet]. 2023 Dec. 31 [cited 2026 Sep. 28];12(2):127-44. available from: https://so05.tci-thaijo.org/index.php/SocialJournal2rmutto/article/view/258103