APA-čujuhus (7. p.)

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

Chicago-čujuhus (17. p.)

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

MLA-čujuhus (9. p.)

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

Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.