Ummah SM, Astutik AP. 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. acopen [Internet]. 2022 Jun. 30 [cited 2025 Aug. 27];6:10.21070/acopen.6.2022.2145. Available from: https://acopen.umsida.ac.id/index.php/acopen/article/view/2145