APA (7th ed.) Citation

Thompson, M. R. (1977). Ballast and subgrade materials evaluation. Dept. of Transportation, Federal Railroad Administration, Office of Research and Development.

Chicago Style (17th ed.) Citation

Thompson, Marshall R. Ballast and Subgrade Materials Evaluation. Washington: Dept. of Transportation, Federal Railroad Administration, Office of Research and Development, 1977.

MLA (9th ed.) Citation

Thompson, Marshall R. Ballast and Subgrade Materials Evaluation. Dept. of Transportation, Federal Railroad Administration, Office of Research and Development, 1977.