Arnold, R. A. (1996). Economics (3rd ed.). West.
Chicago-čujuhus (17. p.)Arnold, Roger A. Economics. 3rd ed. New York: West, 1996.
MLA-čujuhus (9. p.)Arnold, Roger A. Economics. 3rd ed. West, 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.