Hifza. “THE IMPLICATIONS OF THE APPLICATION OF DIFFERENTIATION FOCUS STRATEGIES TO COMPETITIVE ADVANTAGE AT PRIVATE ISLAMIC EDUCATION INSTITUTIONS”. International Journal of Psychosocial Rehabilitation 24, no. 6 (June 30, 2020): 7033–7042. Accessed July 30, 2025. https://psychosocial.com/index.php/ijpr/article/view/7216.