APA (7th ed.) Citation

Real Estate Research Corporation, California. Division of Highways, & United States. Bureau of Public Roads. Office of Research and Development. (1968). A study of airspace utilization. U.S. Department of Transportation, Federal Highway Administration, Bureau of Public Roads.

Chicago Style (17th ed.) Citation

Real Estate Research Corporation, California. Division of Highways, and United States. Bureau of Public Roads. Office of Research and Development. A Study of Airspace Utilization. Washington: U.S. Department of Transportation, Federal Highway Administration, Bureau of Public Roads, 1968.

MLA (9th ed.) Citation

Real Estate Research Corporation, et al. A Study of Airspace Utilization. U.S. Department of Transportation, Federal Highway Administration, Bureau of Public Roads, 1968.