Hannigan, John A. (1982). "Unfriendly Skies: The Decline of the World Aviation Cartel". The Pacific Sociological Review. 25 (1): 107–136. doi:10.2307/1388890. ISSN0030-8919.
Hannigan, John A. (1982). "Unfriendly Skies: The Decline of the World Aviation Cartel". The Pacific Sociological Review. 25 (1): 107–136. doi:10.2307/1388890. ISSN0030-8919.