Mongdee, T., L. . Romyen, and C. . Udomkijmongkol. “Happiness at Work Affecting Performance Effectiveness of the Personnel of Sakon Nakhon Provincial Administration Department, Interior Ministry”. Interdisciplinary Academic and Research Journal, vol. 2, no. 5, Oct. 2022, pp. 691-12, doi:10.14456/iarj.2022.120.