ALIFKHAN, M. V. D.; LAGA, S. A. . Designing an e-report system as a digital portfolio in early childhood education in Surabaya using the waterfall method. Matrix : Jurnal Manajemen Teknologi dan Informatika, [S. l.], v. 14, n. 3, p. 146–161, 2024. DOI: 10.31940/matrix.v14i3.146-161. Disponível em: https://ojs2.pnb.ac.id/index.php/MATRIX/article/view/2171. Acesso em: 22 dec. 2024.