NURHAYATI, Lina; GUNAWAN, Iwan. Learning Obstacle of Integral Course Learning Based on APOS Theory Perspective. Mosharafa: Jurnal Pendidikan Matematika, [S. l.], v. 13, n. 2, p. 323–336, 2024. DOI: 10.31980/mosharafa.v13i2.1688. Disponível em: https://journal.institutpendidikan.ac.id/index.php/mosharafa/article/view/1688. Acesso em: 22 aug. 2025.