HEITMANN, G. The Opportunity Cost of Study Abroad Programs: An Economics-Based Analysis. Frontiers: The Interdisciplinary Journal of Study Abroad, [S. l.], v. 15, n. 1, p. 57–66, 2007. DOI: 10.36366/frontiers.v15i1.216. Disponível em: https://frontiersjournal.org/index.php/Frontiers/article/view/216. Acesso em: 19 apr. 2024.