Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.