Arindawan, D., L. Subagiyo, and E. Palenewen. “The EFFECTIVENESS OF ONLINE OFFLINE LEARNING MEDIA (MO2) BASED ON SMARTPHONE”. IJER - INDONESIAN JOURNAL OF EDUCATIONAL REVIEW, Vol. 8, no. 1, July 2021, pp. 15-22, https://journal.unj.ac.id/unj/index.php/ijer/article/view/23250.