Putra HD, Putri WAS, Fitriana U, Andayani F. Kemampuan Pemecahan Masalah Matematis dan Self-Confidence Siswa SMP. supremum j of mathematics education [Internet]. 2018 Jul. 2 [cited 2026 Jan. 22];2(2):60-7. Available from: https://journal-fkip.unsika.ac.id/index.php/supremum/article/view/1313