Kurniasih DI, Baedhowi B, Sudiyanto S. Media E-Book Berbasis Problem Based Learning dalam Mata Pelajaran Ekonomi. suryaedunomics [Internet]. 2019May31 [cited 2025Sep.9];3(1):49-1. Available from: https://ebook.umpwr.ac.id/suryaedunomics/article/view/1053