American Institute of Graphic Arts & United States. Department of Transportation. (1981). Symbol signs: The system of passenger/pedestrian oriented symbols developed for the U.S. Department of Transportation. Hastings House.
Chicago Style (17th ed.) CitationAmerican Institute of Graphic Arts and United States. Department of Transportation. Symbol Signs: The System of Passenger/pedestrian Oriented Symbols Developed for the U.S. Department of Transportation. New York: Hastings House, 1981.
MLA (9th ed.) CitationAmerican Institute of Graphic Arts and United States. Department of Transportation. Symbol Signs: The System of Passenger/pedestrian Oriented Symbols Developed for the U.S. Department of Transportation. Hastings House, 1981.
Warning: These citations may not always be 100% accurate.