United States. Department of Transportation. Research and Special Programs Administration. (1999). Evaluation of retroreflective markings to increase rail car conspicuity: Safety of highway-railroad grade crossings. U.S. Department of Transportation, Research and Special Programs Administration ; [Available to the public through the National Technical Information Service].
Chicago Style (17th ed.) CitationUnited States. Department of Transportation. Research and Special Programs Administration. Evaluation of Retroreflective Markings to Increase Rail Car Conspicuity: Safety of Highway-railroad Grade Crossings. [Washington, DC] : [Springfield, Va.]: U.S. Department of Transportation, Research and Special Programs Administration ; [Available to the public through the National Technical Information Service], 1999.
MLA (9th ed.) CitationUnited States. Department of Transportation. Research and Special Programs Administration. Evaluation of Retroreflective Markings to Increase Rail Car Conspicuity: Safety of Highway-railroad Grade Crossings. U.S. Department of Transportation, Research and Special Programs Administration ; [Available to the public through the National Technical Information Service], 1999.