APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.