Media E-Book Berbasis Problem Based Learning dalam Mata Pelajaran Ekonomi. Surya Edunomics, [S. l.], v. 3, n. 1, p. 49–61, 2019. Disponível em: https://jurnal.umpwr.ac.id/suryaedunomics/article/view/1053. Acesso em: 15 sep. 2026.