Phomsena, Tanatchapon, and Phrakrusoponkittibundit. “An effectiveness of problem management of people complained towards Damrongdhama center of Phrae province”. Journal of Lanna Societies 1, no. 4 (December 19, 2023): 40–49. accessed May 6, 2025. https://so13.tci-thaijo.org/index.php/jls/article/view/305.