Jie, Cao, Nur Naha Abu Mansor, and Beni Widarman Yus Kelana. “The Effect of Professional Competencies on Job Performance: A Literature Review”. International Journal of Psychosocial Rehabilitation 24, no. 3 (May 31, 2020): 1643–1651. Accessed May 29, 2025. https://psychosocial.com/index.php/ijpr/article/view/3348.