Chimpalee, Sunchai, Warangkana Chankong, and Theerawut Thammakun. 2023. “Factors Correlated With Happiness at Work of Health Personnel in Borai District, Trat Province”. Public Health Policy and Laws Journal 9 (2):297-308. https://so05.tci-thaijo.org/index.php/journal_law/article/view/264506.