Association of American Railroads. Economics and Finance Dept, United States. Interstate Commerce Commission, & Association of American Railroads. Economics and Finance Dept. Statistics of railroads of class I in the United States: Statistical summary. Association of American Railroads, Economics and Finance Dept.
Citazione stile Chigago Style (17a edizione)Association of American Railroads. Economics and Finance Dept, United States. Interstate Commerce Commission, e Association of American Railroads. Economics and Finance Dept. Statistics of Railroads of Class I in the United States: Statistical Summary. Washington,: Association of American Railroads, Economics and Finance Dept.
Citatione MLA (8a ed.)Association of American Railroads. Economics and Finance Dept, et al. Statistics of Railroads of Class I in the United States: Statistical Summary. Association of American Railroads, Economics and Finance Dept.