SULASTRI, Y. L.; AHMATIKA, D. Analisis Keterampilan Abad 21 Melalui Model Problem Based Calculus Learning Berbantuan Geogebra. SJME (Supremum Journal of Mathematics Education), [S. l.], v. 4, n. 1, p. 42–54, 2020. DOI: 10.35706/sjme.v4i1.2254. Disponível em: https://journal.unsika.ac.id/index.php/supremum/article/view/2254. Acesso em: 15 may. 2024.