Firmansah, Fery. “Pelabelan Harmonis Ganjil Pada Graf Bunga Double Quadrilateral”. Jurnal Ilmiah Sains 20, no. 1 (March 10, 2020): 12–17. Accessed November 23, 2024. https://ejournal.unsrat.ac.id/v3/index.php/JIS/article/view/27278.