Cita APA

Digby, B., Hurst, C., Chapman, R., King, A., & Owen, A. (2008). AS Geography for Edexcel.

Citación estilo Chicago

Digby, Bob, Catherine Hurst, Russell Chapman, Anna King, y Andy Owen. AS Geography for Edexcel. 2008.

Cita MLA

Digby, Bob, et al. AS Geography for Edexcel. 2008.