Lasim A, Halikin I, Wijaya K. THE HARMONIOUS, ODD HARMONIOUS, AND EVEN HARMONIOUS LABELING. BAREKENG: J. Math. & App. [Internet]. 15Dec.2022 [cited 6May2024];16(4):1131-8. Available from: https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/5091