Indra Mahdalena, Pardomuan N.J.M Sinambela. Analisis Kemampuan Komunikasi Matematis Mahasiswa Universitas Negeri Medan dengan Penerapan Model Problem Based Learning pada Kalkulus Integral: Penelitian. JERKIN [Internet]. 2025 Jun. 17 [cited 2026 May 7];3(4):4434-41. Available from: https://jerkin.org/index.php/jerkin/article/view/1285