Cita APA

Powell, T., & Powell, T. (2001). The principles of transport economics. London, Sydney: PTRC Education and Research Services.

Citación estilo Chicago

Powell, Tim, y Tim Powell. The Principles of Transport Economics. London, Sydney: PTRC Education and Research Services, 2001.

Cita MLA

Powell, Tim, y Tim Powell. The Principles of Transport Economics. London, Sydney: PTRC Education and Research Services, 2001.

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