Citace podle APA (7th ed.)

Gray, P., & Helmer, O. (1974). California futures study: Analysis of impacts of transportation planning : summary report. State of California, Business and Transportation Agency, Dept. of Transportation, Division of Transportation Planning.

Citace podle Chicago (17th ed.)

Gray, Paul, a Olaf Helmer. California Futures Study: Analysis of Impacts of Transportation Planning : Summary Report. [Sacramento]: State of California, Business and Transportation Agency, Dept. of Transportation, Division of Transportation Planning, 1974.

Citace podle MLA (8th ed.)

Gray, Paul, a Olaf Helmer. California Futures Study: Analysis of Impacts of Transportation Planning : Summary Report. State of California, Business and Transportation Agency, Dept. of Transportation, Division of Transportation Planning, 1974.

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