khaleghkhah, Ali, Adel Zahed babelan, and Ghaffar karimianpour. “Prediction of Job Engagement of Teachers Based on Psychological Capital and Psychological Hardiness”. Journal of the University of Zulia 8, no. 22 (November 24, 2019): 33-47. Accessed December 6, 2025. https://produccioncientificaluz.org/index.php/rluz/article/view/29872.