Usman H, Suntari Y, Wulandari Y. The Need for the Development of PjBL-Based Social Studies E-LKPD for Elementary School Students. mimb.pgsd undiksha [Internet]. 2024 Nov. 9 [cited 2025 Apr. 4];12(2):390-8. Available from: https://ejournal.undiksha.ac.id./index.php/JJPGSD/article/view/72170