Butler, D. L. (1996). Civil aviation and technogeopolitics: The struggle for control of world air routes, 1910-1939. [publisher not identified].
Chicago Style (17th ed.) CitationButler, David Lawrence. Civil Aviation and Technogeopolitics: The Struggle for Control of World Air Routes, 1910-1939. [Place of publication not identified]: [publisher not identified], 1996.
MLA (9th ed.) CitationButler, David Lawrence. Civil Aviation and Technogeopolitics: The Struggle for Control of World Air Routes, 1910-1939. [publisher not identified], 1996.
Warning: These citations may not always be 100% accurate.