Richards, J. C., & Trew, G. (2011). Basic tactics for listening (3rd ed.). New York: Oxford University Press.
Chicago Style aipamenaRichards, Jack C., và Grant Trew. Basic Tactics for Listening. 3rd ed. New York: Oxford University Press, 2011.
MLA aipamenaRichards, Jack C., và Grant Trew. Basic Tactics for Listening. 3rd ed. New York: Oxford University Press, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.