Lertyaso S, Chantamoly S, Suwan P, Hoonnirun P. Happiness Promotion Model for Steel Factory Employees in Nonthaburi Province. J Royal Thai Army Nurses [internet]. 2020 Apr. 27 [cited 2025 Dec. 8];21(1):214-23. available from: https://he01.tci-thaijo.org/index.php/JRTAN/article/view/241545