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.
Chicagoスタイル(17版)引用形式Gray, Paul, , 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.
MLA(8版)引用形式Gray, Paul, , 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.