Bimansah, Rahadi, et al. “DEVELOPMENT OF PROBLEM-BASED LEARNING STUDENT WORKSHEETS ON STATISTICAL MATERIAL ON THE ABILITY TO UNDERSTAND MATHEMATICS CONCEPTS”. Mathline : Jurnal Matematika Dan Pendidikan Matematika, vol. 10, no. 2, June 2025, pp. 335-50, doi:10.31943/mathline.v10i2.727.