APA (7th ed.) Citation

National Research Council (U.S.). Highway Research Board. (1963). Extension of AASHO road test concepts: 4 reports. Highway Research Board, Division of Engineering and Industrial Research, National Academy of Sciences-National Research Council.

Chicago Style (17th ed.) Citation

National Research Council (U.S.). Highway Research Board. Extension of AASHO Road Test Concepts: 4 Reports. Washington: Highway Research Board, Division of Engineering and Industrial Research, National Academy of Sciences-National Research Council, 1963.

MLA (9th ed.) Citation

National Research Council (U.S.). Highway Research Board. Extension of AASHO Road Test Concepts: 4 Reports. Highway Research Board, Division of Engineering and Industrial Research, National Academy of Sciences-National Research Council, 1963.