1.
Ummah SM, Astutik AP. Implementation of Problem Based Learning to Improve The Quality of PAI Learning During The Covid-19 Pandemic at School. acopen [Internet]. 2022Jun.30 [cited 2024Nov.22];60:10.21070/acopen.6.2022.2145. Available from: https://acopen.umsida.ac.id/index.php/acopen/article/view/2145