CASE, K. E. (2017). Principles of economics. Pearson Education.
Chicago-čujuhus (17. p.)CASE, Karl E. Principles of Economics. Pearson Education, 2017.
MLA-čujuhus (9. p.)CASE, Karl E. Principles of Economics. Pearson Education, 2017.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.