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 Feb. 23];2(2):60-7. Available from: https://fkipunsika.id/index.php/supremum/article/view/1313