Sari DPP, Murtono M, Utomo S. Pengembangan Media Pembelajaran Interaktif IPS Berbasis Problem Based Learning dan Ular Tangga. JPE [Internet]. 2021 Feb. 23 [cited 2025 Aug. 23];8(1):1-12. Available from: http://ejurnal.ikippgribojonegoro.ac.id/index.php/JPE/article/view/1305