(2022). Principles of economics. McGraw Hill Education.
Chicago-čujuhus (17. p.)Principles of Economics. McGraw Hill Education, 2022.
MLA-čujuhus (9. p.)Principles of Economics. McGraw Hill Education, 2022.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.