Irene, Yanne, Winda Ayu Mei Lestari, Mahmudi Mahmudi, Muhammad Manaqib, and Gustina Elfiyanti. “Product Cordial Labeling Of Scale Graph S_{1,r}\left(C_3\right) For r\geq3”. Mathline : Jurnal Matematika dan Pendidikan Matematika 9, no. 4 (December 1, 2024): 1073–1087. Accessed February 3, 2025. https://mathline.unwir.ac.id/index.php/Mathline/article/view/662.