Παραπομπή APA

Winfrey, R. (1969). Economic analysis for highways. Scranton, PA: International Textbook Company.

Παραπομπή Chicago Style

Winfrey, Robley. Economic Analysis for Highways. Scranton, PA: International Textbook Company, 1969.

Παραπομπή MLA

Winfrey, Robley. Economic Analysis for Highways. Scranton, PA: International Textbook Company, 1969.

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