APA (7th ed.) Citation

National Research Council (U.S.). Highway Research Board. (1971). Social, economic, and environmental factors of transportation: 20 reports. Highway Research Board, National Research Council.

Chicago Style (17th ed.) Citation

National Research Council (U.S.). Highway Research Board. Social, Economic, and Environmental Factors of Transportation: 20 Reports. Washington, D.C: Highway Research Board, National Research Council, 1971.

MLA (9th ed.) Citation

National Research Council (U.S.). Highway Research Board. Social, Economic, and Environmental Factors of Transportation: 20 Reports. Highway Research Board, National Research Council, 1971.