Department of Transportation. Federal Railroad Administration. (1975). Guidebook for preliminary assessment of urban railroad problems. Department of Transportation.
Cita Chicago (17th ed.)Department of Transportation. Federal Railroad Administration. Guidebook for Preliminary Assessment of Urban Railroad Problems. Washington, D.C: Department of Transportation, 1975.
Cita MLA (9th ed.)Department of Transportation. Federal Railroad Administration. Guidebook for Preliminary Assessment of Urban Railroad Problems. Department of Transportation, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.