Sarbaini, Sarbaini, Salman A.N.M., and Ganesha Lapenangga Putra. “L(3,2,1) Labeling of Firecracker Graph”. Journal of the Indonesian Mathematical Society 29, no. 1 (March 20, 2023): 24–35. Accessed November 21, 2024. https://jims-a.org./index.php/jimsa/article/view/1177.