Harahap, U., & Ardi, A. (2025). Analisis Kebutuhan Lembar Kerja Peserta Didik Sistem Pencernaan Berbasis Model Problem Based Learning Terintegrasi Nilai Islam Kelas XI MA. Al-Alam: Islamic Natural Science Education Journal, 4(2), 102–106. https://doi.org/10.33477/al-alam.v4i2.10762