Library of Congress. Congressional Research Service. (1991). Highway Safety, Traffic Congestion, and Innovations for Improvement: Selected References. [s.n.].
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service. Highway Safety, Traffic Congestion, and Innovations for Improvement: Selected References. [S.l]: [s.n.], 1991.
MLA (8th ed.) CitationLibrary of Congress. Congressional Research Service. Highway Safety, Traffic Congestion, and Innovations for Improvement: Selected References. [s.n.], 1991.
Warning: These citations may not always be 100% accurate.