Widdowson, H. G. (1978). Teaching language as communication. Oxford University Press.
Chicago Style (17th ed.) ZitazioaWiddowson, H. G. Teaching Language as Communication. Oxford: Oxford University Press, 1978.
MLA (9th ed.) ZitazioaWiddowson, H. G. Teaching Language as Communication. Oxford University Press, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.