De Blij, H. J. (2012). Why geography matters: More than ever. Oxford University Press.
Chicago-čujuhus (17. p.)De Blij, Harm J. Why Geography Matters: More than Ever. New York, NY: Oxford University Press, 2012.
MLA-čujuhus (9. p.)De Blij, Harm J. Why Geography Matters: More than Ever. Oxford University Press, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.