APA (7th ed.) Citation

Raphael, D. E. (1980). Forces influencing international air travel to and from North America: A summary. Transportation Research Board, National Academy of Sciences.

Chicago Style (17th ed.) Citation

Raphael, David E. Forces Influencing International Air Travel to and from North America: A Summary. Washington: Transportation Research Board, National Academy of Sciences, 1980.

MLA (9th ed.) Citation

Raphael, David E. Forces Influencing International Air Travel to and from North America: A Summary. Transportation Research Board, National Academy of Sciences, 1980.