Zalsa, T., Indriati, D. and Martini, T. 2024. EDGE IRREGULAR REFLEXIVE LABELING OF DUMBBELL GRAPH, CORONA OF OPEN LADDER, AND NULL GRAPH. BAREKENG: Jurnal Ilmu Matematika dan Terapan. 18, 4 (Oct. 2024), 2767-2778. DOI:https://doi.org/10.30598/barekengvol18iss4pp2767-2778.