WALKER, Alan James. Collusion, Rackets, and Plagiarism in Assessments. MSOR Connections, [S. l.], v. 21, n. 1, p. 9–17, 2023. DOI: 10.21100/msor.v21i1.1411. Disponível em: https://journals.gre.ac.uk/index.php/msor/article/view/1411. Acesso em: 15 oct. 2025.