PENGEMBANGAN E-MODUL PADA MATERI LINGKARAN BERBASIS CTL BERBANTUAN GEOGEBRA. INDONESIAN GEOGEBRA JOURNAL, [S. l.], v. 2, n. 1, p. 1–8, 2024. Disponível em: https://www.journal.geogebra.id/index.php/IGJ/article/view/13. Acesso em: 21 oct. 2025.