Burhanuddin, Nur Aimi Nasuha, Nor Aniza Ahmad, Rozita Radhiah Said, and Soaib Asimiran. “A Systematic Review of the Psychological Capital (PsyCap) Research Development: Implementation and Gaps”. International Journal of Academic Research in Progressive Education and Development 8, no. 3 (August 23, 2019). Accessed October 8, 2025. https://ijarped.com/index.php/journal/article/view/2514.