APA aipamena

Roberts, D. (1980). American railroads: The case for nationalization. New York: Pathfinder.

Chicago Style aipamena

Roberts, Dick. American Railroads: The Case for Nationalization. New York: Pathfinder, 1980.

MLA aipamena

Roberts, Dick. American Railroads: The Case for Nationalization. New York: Pathfinder, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.