Palen, J. J. (1992). The urban world (4th ed.). McGraw - Hill.
Chicago-čujuhus (17. p.)Palen, John J. The Urban World. 4th ed. New York: McGraw - Hill, 1992.
MLA-čujuhus (9. p.)Palen, John J. The Urban World. 4th ed. McGraw - Hill, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.