BUSINESS WORLD. (2008). MARKETING WHITWBOOK 2007-2008. BUSINESS WORLD.
Chicago Style aipamenaBUSINESS WORLD. MARKETING WHITWBOOK 2007-2008. NEW DELHI: BUSINESS WORLD, 2008.
MLA aipamenaBUSINESS WORLD. MARKETING WHITWBOOK 2007-2008. BUSINESS WORLD, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.