Guy, F. (2009). The global environment of business. Oxford.
Chicago-čujuhus (17. p.)Guy, Frederick. The Global Environment of Business. New York: Oxford, 2009.
MLA-čujuhus (9. p.)Guy, Frederick. The Global Environment of Business. Oxford, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.