Roberts, D. (1980). American railroads: The case for nationalization. New York: Pathfinder.
Citazione stile Chigago Style (17a edizione)Roberts, Dick. American Railroads: The Case for Nationalization. New York: Pathfinder, 1980.
Citatione MLA (8a ed.)Roberts, Dick. American Railroads: The Case for Nationalization. New York: Pathfinder, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.