Suriya, Thakdanai, Orapin Piyasakulkiat, and Pakorn Priyakorn. 2026. “Factors Affecting Happiness at Work of Personnel Working in Bang Phli Yai Sub-district Administrative Organization Bang Phli District , Samut Prakan Province”. Doctor of Philosophy in Social Sciences Journal 5 (1):32-48. https://so08.tci-thaijo.org/index.php/dpssj/article/view/4584.