Không rõ. (2001). Promotion and Advertising. Youth PublishingHouse.
Chicago Style aipamenaKhông rõ. Promotion and Advertising. Youth PublishingHouse, 2001.
MLA aipamenaKhông rõ. Promotion and Advertising. Youth PublishingHouse, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.