1.
Siregar N, Hasanah H, Ginting SSB. Peningkatan Kepercayaan Diri Matematis Siswa melalui Pembelajaran Berbasis Masalah. basicedu [Internet]. 2021 Dec. 23 [cited 2024 Dec. 22];6(1):415-22. Available from: https://jbasic.org/index.php/basicedu/article/view/1929