Hanifah, Yosi, and Tuti Lestari. “THE EFFECTIVENESS OF DISTANCE LEARNING (PJJ) ON UNDERSTANDING THE CONCEPT OF STUDENTS ON SCIENCE SUBJECT IN SMPN KECAMATAN LAREH SAGO HALABAN”. Universe 2, no. 2 (December 30, 2021): 198-203. Accessed February 5, 2025. http://universe.ppj.unp.ac.id/index.php/universe/article/view/105.