Tabkong, S., and C. Tunvirachaisakul. “The effect of Happiness-Building activities for medical social workers at Chulalongkorn”. Journal of Social Work and Social Administration, vol. 30, no. 2, Dec. 2022, pp. 98-144, https://so04.tci-thaijo.org/index.php/swjournal/article/view/260455.