Cita APA (7a ed.)

Humphreys, M. J. (2011). Sustainability in European transport policy. Routledge.

Cita Chicago Style (17a ed.)

Humphreys, Matthew James. Sustainability in European Transport Policy. London ; New York: Routledge, 2011.

Cita MLA (9a ed.)

Humphreys, Matthew James. Sustainability in European Transport Policy. Routledge, 2011.