APA (7th ed.) Citation

Elle, B. J. (1968). Issues and prospects in interurban air transport. Almqvist and Wiksell.

Chicago Style (17th ed.) Citation

Elle, Bjorn J. Issues and Prospects in Interurban Air Transport. Stockholm: Almqvist and Wiksell, 1968.

MLA (9th ed.) Citation

Elle, Bjorn J. Issues and Prospects in Interurban Air Transport. Almqvist and Wiksell, 1968.