Rulindova AA, Mardhatillah A, Rulindo R. DOES THE USE OF SOCIAL MEDIA AND MOTIVATIONAL SOURCES AFFECT LEARNING ACHIEVEMENT? REFLECTIONS ON THE LEARNING SYSTEM OF JUNIOR HIGH SCHOOL STUDENTS IN THE PANDEMIC PERIOD. Biopsikososial [Internet]. 2024 Oct. 31 [cited 2026 May 29];8(2):133-49. Available from: https://training-ojs3-publikasi.mercubuana.ac.id/index.php/biopsikososial/article/view/30354