Aini, Rofiqotul, and Moh. Nurul Huda. “ANALISIS KUALITAS BUKU AJAR PENDIDIKAN AGAMA ISLAM DI ERA REVOLUSI INDUSTRI 4.0”. Jurnal As-Salam 4, no. 2 (December 14, 2020): 345–363. Accessed September 14, 2025. https://jurnal-assalam.org/index.php/JAS/article/view/222.