JACKSON, K.; ZANG, W. Evaluating Methodological Issues in the Tourism Literature: UK outgoing tourism and trade links. Economic Issues, [S. l.], v. 20, n. 1, p. 1–41, 2015. Disponível em: https://economicissues.org.uk/index.php/EI_OJS/article/view/231. Acesso em: 15 oct. 2026.