Nurrahmah N, , Darsikin , D, Kade A. Model Penalaran Matematika Formal Siswa Dalam Memecahkan Masalah Fisika. mitrasains [Internet]. 2019 May 30 [cited 2026 May 4];7(2):205-14. Available from: http://103.245.72.41/index.php/MitraSains/article/view/285