CLARK, L.; WILLIAMS, G. J. English Language Proficiency in Radiotelephony: A survey about its effect on the safety and efficiency of aviation. The ESPecialist, [S. l.], v. 41, n. 4, 2020. DOI: 10.23925/2318-7115.2020v41i4a9. Disponível em: https://revistas.pucsp.br/index.php/esp/article/view/50799. Acesso em: 27 jan. 2023.