1.
Nasution NS, Chastanti I, Harahap DA. PROFILE OF STUDENTS DIFFICULTY IN BIOLOGY LEARNING DURING PANDEMIC COVID-19 IN SMA NEGERI 1 SILANGKITANG. JPP [Internet]. 2021 Mar. 31 [cited 2026 Feb. 15];9(1). Available from: https://jurnal.unimed.ac.id/2012/index.php/pelita/article/view/22205