Witheford, D. K., & Kanaan, G. E. (1972). Zoning, parking, and traffic. Eno Foundation for Transportation.
Cita Chicago (17th ed.)Witheford, David K., i George E. Kanaan. Zoning, Parking, and Traffic. Saugatuck, Conn: Eno Foundation for Transportation, 1972.
Cita MLA (9th ed.)Witheford, David K., i George E. Kanaan. Zoning, Parking, and Traffic. Eno Foundation for Transportation, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.