“ANALISIS KEBUTUHAN LKPD BERBASIS PROBLEM BASED LEARNING (PBL) TENTANG MATERI PERUBAHAN LINGKUNGAN DI MAN 1 PASAMAN BARAT”. 2025. BIOCHEPHY: Journal of Science Education 5 (2): 844-49. https://www.journal.moripublishing.com/index.php/biochephy/article/view/1718.