Macpherson, G. (1993). Highway and transportation engineering and planning. Longman.
Cita Chicago (17th ed.)Macpherson, Gavin. Highway and Transportation Engineering and Planning. Essex, England: Longman, 1993.
Cita MLA (8th ed.)Macpherson, Gavin. Highway and Transportation Engineering and Planning. Longman, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.