I Dewa Ayu Made Parimita Dewi and Gede Wira Bayu (2022) “E-Book Berbasis Problem Based Learning Materi Bangun Ruang Muatan Matematika Kelas VI SD”, Jurnal Edutech Undiksha, 10(2), pp. 353–363. doi: 10.23887/jeu.v10i2.48606.