Nisa, Fakhrun, M. Fathoni, and Adika Brata. “A PROPERLY EVEN HARMONIOUS LABELING OF SOME WHEEL GRAPH W_n FOR N IS EVEN”. BAREKENG: Jurnal Ilmu Matematika dan Terapan 18, no. 1 (March 1, 2024): 0553-0564. Accessed October 14, 2024. https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/11101.