APA

U.S. Department of Transportation. Research and Special Programs Administration. Materials Transportation Bureau, . (1980). Office of operations and enforcement. Annual report. Washington DC: U.S. Department of Transportation. Research and Special Programs Administration. Materials Transportation Bureau.

Chicago

U.S. Department of Transportation. Research and Special Programs Administration. Materials Transportation Bureau, . 1980. Office of operations and enforcement. Annual report. Washington DC: U.S. Department of Transportation. Research and Special Programs Administration. Materials Transportation Bureau.

Harvard

U.S. Department of Transportation. Research and Special Programs Administration. Materials Transportation Bureau, . (1980). Office of operations and enforcement. Annual report. Washington DC: U.S. Department of Transportation. Research and Special Programs Administration. Materials Transportation Bureau.

MLA

U.S. Department of Transportation. Research and Special Programs Administration. Materials Transportation Bureau, . Office of operations and enforcement. Annual report. Washington DC: U.S. Department of Transportation. Research and Special Programs Administration. Materials Transportation Bureau. 1980.