Maddison, D., Pearce, D., & Johansson, O. (1996). The True Costs of Road Transport. Earthscan Publications Ltd.
Chicago Style (17th ed.) ZitazioaMaddison, David, David Pearce, eta Olof Johansson. The True Costs of Road Transport. London: Earthscan Publications Ltd, 1996.
MLA (9th ed.) ZitazioaMaddison, David, et al. The True Costs of Road Transport. Earthscan Publications Ltd, 1996.
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