Rejeki, Herwinta, Joko Sutarto, and Budi Mindyarto. “The Effectiveness of Online Problem-Based Learning in Improving Critical Thinking Skills and Digital Literacy of Elementary School Students”. Journal of Primary Education 11, no. 2 (June 30, 2022): 152-164. Accessed April 19, 2024. https://journal.unnes.ac.id/sju/jpe/article/view/56039.