Ummah, S. M. and Astutik, A. P. (2022) “Implementation of Problem Based Learning to Improve The Quality of PAI Learning During The Covid-19 Pandemic at School: Implementasi Problem Based Learning Untuk Meningkatkan Kualitas Pembelajaran PAI Selama Pandemi Covid-19 di Sekolah”, Academia Open, 6, p. 10.21070/acopen.6.2022.2145. doi: 10.21070/acopen.6.2022.2145.