Rixon, S. (1987). Listening: Upper - intermediate. New York: Oxford University Press.
Chicago Style aipamenaRixon, Shelagh. Listening: Upper - Intermediate. New York: Oxford University Press, 1987.
MLA aipamenaRixon, Shelagh. Listening: Upper - Intermediate. New York: Oxford University Press, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.