Taaffe, E. J., & Gauthier, H. L. (1973). Geography of transportation. Prentice-Hall.
Cita Chicago (17th ed.)Taaffe, Edward J., i Howard L. Gauthier. Geography of Transportation. Englewood Cliffs, N. J: Prentice-Hall, 1973.
Cita MLA (9th ed.)Taaffe, Edward J., i Howard L. Gauthier. Geography of Transportation. Prentice-Hall, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.