Firmansah, Fery, Tasari Tasari, and Muhammad Ridlo Yuwono. “Odd Harmonious Labeling of the Zinnia Flower Graphs”. Jurnal Ilmiah Sains 23, no. 1 (June 16, 2023): 40–46. Accessed December 22, 2024. https://ejournal.unsrat.ac.id/v3/index.php/JIS/article/view/46771.