ebrary, Inc. (2007). Design and business. Emerald Group Publishing.
Chicago Style (17th ed.) Zitazioaebrary, Inc. Design and Business. Bradford, England: Emerald Group Publishing, 2007.
MLA (9th ed.) Zitazioaebrary, Inc. Design and Business. Emerald Group Publishing, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.