Cita APA

Clifford, N. J. (2009). Key concepts in geography (2nd ed.). Ssge.

Citación estilo Chicago

Clifford, Nicholas J,Ed. Key Concepts in Geography. 2nd ed. Los Angeles: Ssge, 2009.

Cita MLA

Clifford, Nicholas J,Ed. Key Concepts in Geography. 2nd ed. Ssge, 2009.