NOBLE, D. F. Digital diploma mills: The automation of higher education. First Monday, [S. l.], v. 3, n. 1, 1998. DOI: 10.5210/fm.v3i1.569. Disponível em: https://journals.uic.edu/ojs/index.php/fm/article/view/569. Acesso em: 18 jan. 2022.