APA aipamena

Koester, A. (2002). Business Advantage. NY.: Cambridge.

Chicago Style aipamena

Koester, Almut. Business Advantage. NY.: Cambridge, 2002.

MLA aipamena

Koester, Almut. Business Advantage. NY.: Cambridge, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.