Muliana, Mutia Fonna, and Hayatun Nufus. 2024. “Pengaruh Penerapan Problem Based Learning (PBL) Terhadap Keterampilan Abad 21”. Ar-Riyadhiyyat: Journal of Mathematics Education 5 (1):22-30. https://doi.org/10.47766/arriyadhiyyat.v5i1.2900.