Hubbard. (2019). Essentials Of Economics (6th ed.). Pearson.
Chicago-čujuhus (17. p.)Hubbard. Essentials Of Economics. 6th ed. Newyork: Pearson, 2019.
MLA-čujuhus (9. p.)Hubbard. Essentials Of Economics. 6th ed. Pearson, 2019.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.