HERNIK PUJIASTUTIK; ARIESKA, I’is Naeni. UJI VALIDITAS BULETIN BERBASIS PROBLEM BASED LEARNING UNTUK MENINGKATKAN LITERASI SAINS SISWA SMP/MTS PADA MATERI PENCEMARAN LINGKUNGAN. Prosiding SNasPPM, [S. l.], v. 5, n. 2, p. 244–250, 2021. Disponível em: http://prosiding.unirow.ac.id/index.php/SNasPPM/article/view/421. Acesso em: 2 may. 2024.