Hutchinson, T., & Waters, A. (1987). English for specific purposes: A learning-centred approach. Cambridge University Press.
Chicago-viite (17. p.)Hutchinson, Tom, ja Alan Waters. English for Specific Purposes: A Learning-centred Approach. Cambridge [Cambridgeshire]: Cambridge University Press, 1987.
MLA-viite (8. p.)Hutchinson, Tom, ja Alan Waters. English for Specific Purposes: A Learning-centred Approach. Cambridge University Press, 1987.
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