MOH. BISRI. PENGGUNAAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING DALAM PENENTUAN VOLUME KERUCUT DI SMP NEGERI 21 SURABAYA. WIDYALOKA, [S. l.], v. 9, n. 2, p. 228–237, 2022. Disponível em: http://jurnal.ikipwidyadarmasurabaya.ac.id/index.php/widyaloka/article/view/101. Acesso em: 20 aug. 2026.