Gerzema John. (2008). Brand Bubble: Looming Crisis in Brand Value. Jossey Bass.
Chicago Style aipamenaGerzema John. Brand Bubble: Looming Crisis in Brand Value. New Jersey: Jossey Bass, 2008.
MLA aipamenaGerzema John. Brand Bubble: Looming Crisis in Brand Value. Jossey Bass, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.