Maddison, D., Pearce, D., & Johansson, O. (1996). The True Costs of Road Transport. Earthscan Publications Ltd.
Cita Chicago (17th ed.)Maddison, David, David Pearce, i Olof Johansson. The True Costs of Road Transport. London: Earthscan Publications Ltd, 1996.
Cita MLA (9th ed.)Maddison, David, et al. The True Costs of Road Transport. Earthscan Publications Ltd, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.