SAPUTRA, P. C.; SARDJONO, W.; PUDJADI, T. Studi E-Learning Berbasis Knowledge Management Lingkungan Hidup. ComTech: Computer, Mathematics and Engineering Applications, [S. l.], v. 4, n. 2, p. 659-665, 2013. DOI: 10.21512/comtech.v4i2.2490. Disponível em: https://journal.binus.ac.id/index.php/comtech/article/view/2490. Acesso em: 23 feb. 2025.