Cita APA

Digby, B., Hurst, C., Chapman, R., Cowling, D., & Dale, T. (2009). A2 Geography for Edexcel.

Citación estilo Chicago

Digby, Bob, Catherine Hurst, Russell Chapman, Dan Cowling, y Tony Dale. A2 Geography for Edexcel. 2009.

Cita MLA

Digby, Bob, et al. A2 Geography for Edexcel. 2009.