Edwards, J. D. (1992). Transportation planning handbook. Prentice Hall.
Cita Chicago (17th ed.)Edwards, John D. Transportation Planning Handbook. Englewood Cliffs: Prentice Hall, 1992.
Cita MLA (9th ed.)Edwards, John D. Transportation Planning Handbook. Prentice Hall, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.