Martin, G. J., & James, P. W. (1993). All possible worlds: A history of geographical ideas (3rd ed.). Wiley.
Chicago-čujuhus (17. p.)Martin, Geoffrey J., juo Preston W. James. All Possible Worlds: A History of Geographical Ideas. 3rd ed. New York: Wiley, 1993.
MLA-čujuhus (9. p.)Martin, Geoffrey J., juo Preston W. James. All Possible Worlds: A History of Geographical Ideas. 3rd ed. Wiley, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.