Sutisna, Deden, Sri Wiludjeng SP, Suskim Riantani, and Yelli Eka Sumadhinata. “Optimization of Human Capital in Improving Competitive Advantage of Higher Education through Institution’s Performance: A Case Study of Widyatama University”. International Journal of Psychosocial Rehabilitation 24, no. 2 (April 30, 2020): 2880–2890. Accessed June 14, 2025. https://www.psychosocial.com/index.php/ijpr/article/view/1956.