Sari, N., Heryanto, H., Peranginangin, L. and Tobing, R. H. L. . (2024) “The Contribution of Problem-Solving Ability To Self-Regulated Learning of Khairul Imam Medan Middle School Students”, Mathline : Jurnal Matematika dan Pendidikan Matematika, 9(3), pp. 887–898. doi: 10.31943/mathline.v9i3.645.