APA (7th ed.) Citation

Kennedy, T. H. (1924). An introduction to the economics of air transportation. The Macmillan company.

Chicago Style (17th ed.) Citation

Kennedy, Thomas Hart. An Introduction to the Economics of Air Transportation. New York: The Macmillan company, 1924.

MLA (9th ed.) Citation

Kennedy, Thomas Hart. An Introduction to the Economics of Air Transportation. The Macmillan company, 1924.