The assistance and development of an online attendance system at Integrated Islamic School Ibnu Hajar, Balikpapan. Community Empowerment, [S. l.], v. 7, n. 1, p. 67–73, 2022. DOI: 10.31603/ce.5679. Disponível em: https://coba.unimma.ac.id/ce/article/view/5679. Acesso em: 30 sep. 2026.