HUTCHINSON, B. G. (1974). Principles of urban transport systems planning. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)HUTCHINSON, B. G. Principles of Urban Transport Systems Planning. New York: McGraw-Hill, 1974.
Lua MLA (8ú heag.)HUTCHINSON, B. G. Principles of Urban Transport Systems Planning. McGraw-Hill, 1974.
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