Παραπομπή APA

Van der Tak, H. G., & Ray, A. (1971). The economic benefits of road transport projects. Baltimore: The Johns Hopkins Press.

Παραπομπή Chicago Style

Van der Tak, Herman G., and Anandarup Ray. The Economic Benefits of Road Transport Projects. Baltimore: The Johns Hopkins Press, 1971.

Παραπομπή MLA

Van der Tak, Herman G., and Anandarup Ray. The Economic Benefits of Road Transport Projects. Baltimore: The Johns Hopkins Press, 1971.

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