Laowanich, N. ., M. . Punyaratabandhu, N. . Patcharatanasan, and E. Lukkanalikitkul. “Factors Associated With Happiness Among Registered Nurses”. Nursing Journal of The Ministry of Public Health, vol. 31, no. 2, Aug. 2021, pp. 181-94, https://he02.tci-thaijo.org/index.php/tnaph/article/view/252593.