Wangwon, Chatwut, and Saran Pimthong. “Effectiveness of Positive Psychological Capital Program on Work Engagement of Employees of Non-Governmental Organizations (NGOs) on Gender Diversity”. Journal of Behavioral Science for Development 15, no. 1 (January 29, 2023): 108–124. accessed August 28, 2026. https://so02.tci-thaijo.org/index.php/JBSD/article/view/259180.