Aldcorn, S. B., Gordon, D., Harper, A., & Richard, J. C. (2003). Basic tactics for listening: Teacher's book (Second edition.). Oxford: Oxford Univ. Press.
Chicago Style aipamenaAldcorn, Sue Brioux, Deborah Gordon, Andrew Harper, và Jack C. Richard. Basic Tactics for Listening: Teacher's Book. Second edition. Oxford: Oxford Univ. Press, 2003.
MLA aipamenaAldcorn, Sue Brioux, Deborah Gordon, Andrew Harper, và Jack C. Richard. Basic Tactics for Listening: Teacher's Book. Second edition. Oxford: Oxford Univ. Press, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.