Mohd Sa'ari Rodrigues, Mohamad Najib, and Syahirbanun Isa. “Numerical Solution of Mathematical Model of Tumor Immune Response Using Runge-Kutta Fourth Order Method”. Enhanced Knowledge in Sciences and Technology, vol. 5, no. 2, Dec. 2025, pp. 157-64, https://publisher.uthm.edu.my/periodicals/index.php/ekst/article/view/18535.