Dyfyniad APA

(1988). Railroads in the age of regulation, 1900-1980. New York: Facts On File.

Dyfyniad Arddull Chicago

Railroads in the Age of Regulation, 1900-1980. New York: Facts On File, 1988.

Dyfyniad MLA

Railroads in the Age of Regulation, 1900-1980. New York: Facts On File, 1988.

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