(2020). Economics (20th ed.). McGrae Hill Education.
Chicago-čujuhus (17. p.)Economics. 20th ed. New York: McGrae Hill Education, 2020.
MLA-čujuhus (9. p.)Economics. 20th ed. McGrae Hill Education, 2020.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.