Judijanto L. Patterns, Trends, And Gaps In The Current Pool Of Knowledge, Thus Contributing To A More Diverse Understanding Of PBL In The Context Of Secondary Education. qalamuna [Internet]. 30Dec.2021 [cited 17May2024];13(2):969-80. Available from: https://ejournal.insuriponorogo.ac.id/index.php/qalamuna/article/view/4317