Ramang R, Ahyani N, Fitria H. Development of Problem-Based Learning Models in Strengthening Positive Character and Behavior of Early Childhood Students. J. Soc. Work Sci. Educ. [Internet]. 2024 Apr. 8 [cited 2026 Apr. 27];5(2):718-26. Available from: http://ejournal.sembilanpemuda.id/index.php/jswse/article/view/805