Irmayasari, Irmayasari, Makrina Tindangen, and Evie Palenewen. 2021. “THE EFFECTIVENESS OF THE VIRTUAL LEARNING MEDIA GRAPH COLORING LABORATORY”. IJER - INDONESIAN JOURNAL OF EDUCATIONAL REVIEW 8 (1):35-44. https://journal.unj.ac.id/unj/index.php/ijer/article/view/25140.