ATMADJA, Kurniawan. PELABELAN HARMONIS PADA GRAF TANGGA SEGITIGA PITA. Jurnal Saintika Unpam : Jurnal Sains dan Matematika Unpam, [S. l.], v. 4, n. 1, p. 1–6, 2021. DOI: 10.32493/jsmu.v4i1.10334. Disponível em: https://openjournal.unpam.ac.id/index.php/jsmu/article/view/10334. Acesso em: 13 mar. 2026.