Παραπομπή APA

Perle, E. D. (1964). The demand for transportation: Regional and commodity studies in the Unites States. Chicago: The University of Chicago Press.

Παραπομπή Chicago Style

Perle, Eugene D. The Demand for Transportation: Regional and Commodity Studies in the Unites States. Chicago: The University of Chicago Press, 1964.

Παραπομπή MLA

Perle, Eugene D. The Demand for Transportation: Regional and Commodity Studies in the Unites States. Chicago: The University of Chicago Press, 1964.

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