Ruetrakul J. The Causal Model of Factors Affecting Head Nurses’ Happiness at Workplace in Secondary Hospital, Regional Health 3. Nursing [Internet]. 2019 Feb. 18 [cited 2024 May 6];12(3):107-21. Available from: https://he01.tci-thaijo.org/index.php/NurseNu/article/view/173081