Cita APA (7a ed.)

Waugh, D., & Bushell, T. (2007). New key geography for GCSE (2nd ed.). Nelson Thornes.

Cita Chicago Style (17a ed.)

Waugh, David, y Tony Bushell. New Key Geography for GCSE. 2nd ed. Cheltenham: Nelson Thornes, 2007.

Cita MLA (9a ed.)

Waugh, David, y Tony Bushell. New Key Geography for GCSE. 2nd ed. Nelson Thornes, 2007.