APA (7th ed.) Citation

National Research Council (U.S.). Highway Research Board. (1972). Research problem statements: Operation and maintenance of transportation facilities. Highway Research Board, National Research Council.

Chicago Style (17th ed.) Citation

National Research Council (U.S.). Highway Research Board. Research Problem Statements: Operation and Maintenance of Transportation Facilities. Washington, D.C: Highway Research Board, National Research Council, 1972.

MLA (9th ed.) Citation

National Research Council (U.S.). Highway Research Board. Research Problem Statements: Operation and Maintenance of Transportation Facilities. Highway Research Board, National Research Council, 1972.