Hancock, M., English Pronunciation in use, Cambridge,
Comfort, J., Effective presentations, Oxford,
Thomas, B. and Matthews, B., Vocabulary for first certificate, Cambridge,
Hashemi, l. and Thomas, B., Grammar for first certificate, Cambridge,
Bibliografía básica,
Murphy, R., English Grammar in use, Cambridge,
Bibliografía complementaria,
Mccarthy, M. and O´Dell, F., English vocabulary in use, Cambridge,
Quirk, R. and Greenbaum, J., A University Grammar of English, Longman,
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