Badriyah, Dewi, and Hanifah Nurus Sopiany. “Kemampuan Pemecahan Masalah Matematis Siswa SMK Berdasarkan Tingkat Self Confidence”. Didactical Mathematics 5, no. 1 (April 29, 2023): 107–116. Accessed June 17, 2025. https://www.ejournal.unma.ac.id/index.php/dm/article/view/5008.