POHAN, Widia Hafni; SIREGAR, Sakinah Ubudiyah; HARAHAP, Risma Delima. Analisis Managemen Waktu terhadap Konsentrasi Belajar Matematika Kelas VIII. Jurnal Basicedu, [S. l.], v. 7, n. 1, p. 779–786, 2023. DOI: 10.31004/basicedu.v7i1.4580. Disponível em: https://jbasic.org/index.php/basicedu/article/view/4580. Acesso em: 24 apr. 2025.