ENGLE, L.; ENGLE, J. Study Abroad Levels: Toward a Classification of Program Types. Frontiers: The Interdisciplinary Journal of Study Abroad, [S. l.], v. 9, n. 1, p. 1–20, 2003. DOI: 10.36366/frontiers.v9i1.113. Disponível em: https://frontiersjournal.org/index.php/Frontiers/article/view/113. Acesso em: 6 may. 2024.