(1976). Understanding economics (2nd ed.). Ginn.
Chicago-čujuhus (17. p.)Understanding Economics. 2nd ed. Aylesbury: Ginn, 1976.
MLA-čujuhus (9. p.)Understanding Economics. 2nd ed. Ginn, 1976.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.