Mufliha, D. I. M., Erlangga, E., & Sugiarti, R. (2025). The Effect of Social Support and Self-Efficacy on Academic Procrastination with Smartphone Addiction as an Intervening Variable in Completing Final Students’ Assignments. Ranah Research : Journal of Multidisciplinary Research and Development, 7(5), 3329-3343. https://doi.org/10.38035/rrj.v7i5.1630