Erdman, J. W., & Barnfield, C. I. Baltimore's freeway surveillance and control system. Traffic engineering : official publication of the Institute of Transportation Engineers.
Chicago Style (17th ed.) CitationErdman, John W., and Curtis I. Barnfield. "Baltimore's Freeway Surveillance and Control System." Traffic Engineering : Official Publication of the Institute of Transportation Engineers .
MLA (9th ed.) CitationErdman, John W., and Curtis I. Barnfield. "Baltimore's Freeway Surveillance and Control System." Traffic Engineering : Official Publication of the Institute of Transportation Engineers, .
Warning: These citations may not always be 100% accurate.