APA

U.S. Department of Transportation, Federal Railroad Administration, Office of Safety. Code of Federal Regulations 49 & Parts 217 and 218. (1991). Railroad operating rules and practices. Washington DC: U.S. Department of Transportation.

Chicago

U.S. Department of Transportation, Federal Railroad Administration, Office of Safety. Code of Federal Regulations 49 and Parts 217 and 218. 1991. Railroad operating rules and practices. Washington DC: U.S. Department of Transportation.

Harvard

U.S. Department of Transportation, Federal Railroad Administration, Office of Safety. Code of Federal Regulations 49 and Parts 217 and 218. (1991). Railroad operating rules and practices. Washington DC: U.S. Department of Transportation.

MLA

U.S. Department of Transportation, Federal Railroad Administration, Office of Safety. Code of Federal Regulations 49 and Parts 217 and 218. Railroad operating rules and practices. Washington DC: U.S. Department of Transportation. 1991.