Juriana, Juriana, and Firdaus Firdaus. “Effectiveness of Online Learning in English Subject at Pangkalpinang State Junior High School During Covid-19 Pandemic”. Jurnal Sustainable 6, no. 2 (December 20, 2023): 666-681. Accessed April 8, 2025. https://jurnal.lp2msasbabel.ac.id/index.php/sus/article/view/3623.