INDRIANI M, KHOLIQ A. PENGEMBANGAN KONTEN E-BOOK MATERI USAHA DAN ENERGI BERBASIS CRITICAL THINKING. IPF [Internet]. 2019 Sep. 24 [cited 2025 Nov. 4];8(3). Available from: https://ejournal.unesa.ac.id/index.php/inovasi-pendidikan-fisika/article/view/30599