Cita APA (7a ed.)

Hickman, R., Banister, D., & Penn, A. (2009). Low carbon transport challenges ahead. University College London.

Cita Chicago Style (17a ed.)

Hickman, R., D. Banister, y A. Penn. Low Carbon Transport Challenges Ahead. University College London, 2009.

Cita MLA (9a ed.)

Hickman, R., et al. Low Carbon Transport Challenges Ahead. University College London, 2009.