Cita APA (7th ed.)

Edited by Clifford, N. J. (2009). Key Concepts in Geography (2nd ed.). Sage.

Cita Chicago (17th ed.)

Edited by Clifford, Nicholas J. Key Concepts in Geography. 2nd ed. Chennai: Sage, 2009.

Cita MLA (9th ed.)

Edited by Clifford, Nicholas J. Key Concepts in Geography. 2nd ed. Sage, 2009.