APA aipamena

Gude, K., & Kathy Gude. (1999). Advanced listening and speaking: C A E. United Kingdom: Oxford University Press.

Chicago Style aipamena

Gude, Kathy, và Kathy Gude. Advanced Listening and Speaking: C A E. United Kingdom: Oxford University Press, 1999.

MLA aipamena

Gude, Kathy, và Kathy Gude. Advanced Listening and Speaking: C A E. United Kingdom: Oxford University Press, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.