SIREGAR, Nurdiana; HASANAH, Hasanah; GINTING, Siti Salamah Br. Peningkatan Kepercayaan Diri Matematis Siswa melalui Pembelajaran Berbasis Masalah. Jurnal Basicedu, [S. l.], v. 6, n. 1, p. 415–422, 2021. DOI: 10.31004/basicedu.v6i1.1929. Disponível em: https://jbasic.org/index.php/basicedu/article/view/1929. Acesso em: 22 dec. 2024.