Cita APA

Dunphy, R. T., & Griffiths, R. E. (1981). The first four years of metrorail: Travel changes : a metrorail before-and-after study report. Washington: U.S. Departamento of Transportation.

Citación estilo Chicago

Dunphy, Roberto T., y Robert E. Griffiths. The First Four Years of Metrorail: Travel Changes : A Metrorail Before-and-after Study Report. Washington: U.S. Departamento of Transportation, 1981.

Cita MLA

Dunphy, Roberto T., y Robert E. Griffiths. The First Four Years of Metrorail: Travel Changes : A Metrorail Before-and-after Study Report. Washington: U.S. Departamento of Transportation, 1981.