APA aipamena

Day, J., & Jeremy Day. (2014). Unlock: Listening and speaking skills. Cambridge: Cambridge University Press.

Chicago Style aipamena

Day, Jeremy, và Jeremy Day. Unlock: Listening and Speaking Skills. Cambridge: Cambridge University Press, 2014.

MLA aipamena

Day, Jeremy, và Jeremy Day. Unlock: Listening and Speaking Skills. Cambridge: Cambridge University Press, 2014.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.