Gervais, E. F., & Roth, W. (1960). An evaluation of freeway ramp closure. John C. Lodge Freeway Traffic Surveillance Research Project.
Citace podle Chicago (17th ed.)Gervais, Edward F., a Walter Roth. An Evaluation of Freeway Ramp Closure. [Detroit, Mich.: John C. Lodge Freeway Traffic Surveillance Research Project, 1960.
Citace podle MLA (8th ed.)Gervais, Edward F., a Walter Roth. An Evaluation of Freeway Ramp Closure. John C. Lodge Freeway Traffic Surveillance Research Project, 1960.
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