Gay, R. (2007). Online Marketing. HarperCollins Publishers.
Chicago-čujuhus (17. p.)Gay, Richard. Online Marketing. New York: HarperCollins Publishers, 2007.
MLA-čujuhus (9. p.)Gay, Richard. Online Marketing. HarperCollins Publishers, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.