1.
Hoyi R, Astalini A, Kurniawan DA. Efforts to Improve Students’ Attitudes with the Problem Based Learning Model. indonesian j. educ. res. rev. [Internet]. 2021 Jul. 13 [cited 2024 Dec. 30];4(1):133-42. Available from: https://ejournal.undiksha.ac.id./index.php/IJERR/article/view/36751