A. A. . Syari, M. . Amsar, S. C. P. . Daulay, and A. . Fitrah, “Pasar Persaingan Sempurna”, Al, vol. 2, no. 1, pp. 156–162, Jun. 2025, Accessed: Apr. 30, 2026. [Online]. Available: http://journal.staittd.ac.id/index.php/ai/article/view/455