“ANALISIS KEBUTUHAN LKPD BERBASIS PROBLEM BASED LEARNING (PBL) TENTANG MATERI PERUBAHAN LINGKUNGAN DI MAN 1 PASAMAN BARAT”. BIOCHEPHY: Journal of Science Education, vol. 5, no. 2, Dec. 2025, pp. 844-9, https://www.journal.moripublishing.com/index.php/biochephy/article/view/1718.