Alan M. Voorhees & Associates. (1968). Factors and trends in trip lengths. Highway Research Board, Division of Engineering, National Research Council, National Academy of Sciences-National Academy of Engineering.
Chicago Style (17th ed.) CitationAlan M. Voorhees & Associates. Factors and Trends in Trip Lengths. Washington, D.C: Highway Research Board, Division of Engineering, National Research Council, National Academy of Sciences-National Academy of Engineering, 1968.
MLA (9th ed.) CitationAlan M. Voorhees & Associates. Factors and Trends in Trip Lengths. Highway Research Board, Division of Engineering, National Research Council, National Academy of Sciences-National Academy of Engineering, 1968.
Warning: These citations may not always be 100% accurate.