Casey, P. (2014). The Greatest Company in the World? Portfolio.
Chicago-čujuhus (17. p.)Casey, Peter. The Greatest Company in the World? NEw Delhi: Portfolio, 2014.
MLA-čujuhus (9. p.)Casey, Peter. The Greatest Company in the World? Portfolio, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.