AAR railroad cost indexes.
APA Citation
Association of American Railroads. Economics and Finance Department. (1986). AAR railroad cost indexes. Washington, D.C.: Economics and Finance Dept., Association of American Railroads.
MLA Citation
Association of American Railroads. Economics and Finance Department. AAR Railroad Cost Indexes. Washington, D.C.: Economics and Finance Dept., Association of American Railroads, 1986.
Warning: These citations may not always be complete (especially for serials).