Brooks John. (2014). Business Adventures. John Murray Learning.
Chicago-čujuhus (17. p.)Brooks John. Business Adventures. John Murray Learning, 2014.
MLA-čujuhus (9. p.)Brooks John. Business Adventures. John Murray Learning, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.