Tim harford. (2017). Fifty Things That Made the Modern Economy. Little Brown.
Chicago-čujuhus (17. p.)Tim harford. Fifty Things That Made the Modern Economy. UK: Little Brown, 2017.
MLA-čujuhus (9. p.)Tim harford. Fifty Things That Made the Modern Economy. Little Brown, 2017.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.