APA aipamena

Grant, D. (2004). Business focus: Class cassette. Oxford: Oxford university press.

Chicago Style aipamena

Grant, David. Business Focus: Class Cassette. Oxford: Oxford university press, 2004.

MLA aipamena

Grant, David. Business Focus: Class Cassette. Oxford: Oxford university press, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.