TCHE, J. Airlines Operating Cost and Revenue: The Case of the Cameroon National Airline. International Journal of Social Science and Economics Invention, [S. l.], v. 9, n. 04, p. 55 to 62, 2023. DOI: 10.23958/ijssei/vol09-i04/357. Disponível em: http://ijssei.in/index.php/ijssei/article/view/357. Acesso em: 16 may. 2024.