Zaragoza:

BB	Oxenden, Clive. English file : Intermediate / Clive Oxenden, Christina Latham-Koenig with Jane Hudson. - 4ª ed. 4ª ed.
BB	Oxenden, Clive. English file : intermediate workbook / Clive Oxenden, Christian Latham-Koenig, with Gill Hamilton . - 1st ed., 8th. reimpr. Oxford : Oxford University Press, cop. 2002 (reimpr.)
BC	Alexander, L.G.. Longman English grammar / L.G. Alexander . - 1st ed., 23rd. impr. London ; New York : Longman, 1988 (reimpr. 2006)
BC	Bolton, David. English grammar in steps / english grammar presented, explained and practised in context by David Bolton and Noel Goodey . - [1ª ed.] London : Richmond, D. L. 2004
BC	Bolton, David. Grammar practice in context : English grammar practice exercises covering the 100 most important grammar topics and structures / byDavid Bolton & Noel Goodey London : Richmond Publishing, D.L. 1997
BC	Eastwood, John. Oxford practice grammar : intermediate : with answers / John Eastwood . - 1st published Oxford [etc.] : Oxford University Press, 2006
BC	Murphy, Raymond. English grammar in use : a self-study reference and practice book for intermediate students of English : with answers / Raymond Murphy . - 4rd ed., Cambridge University Press, cop. 2012.
BC	Rowan, Jean. New english grammar for bachillerato / Jean Rowan Limassol (Cyprus) : Burlington Books, cop. 2005
BC	Swan, Michael. How English Works / Michael Swan and Catherine Walter Oxford : Oxford University Press. [Intermediate Vocabulary / B. J. Thomas. Edward Arnold]
BC	Swan, Michael. Practical English usage / Michael Swan . - 1st ed., 13th impr. Oxford : Oxford University Press, 1986 (reimp.)
BC	Swan, Michael. Practical English usage / Michael Swan . - 3rd. ed. Oxford : Oxford University Press, 2005
BC	Thomson, A. J.. A practical English grammar / A. J. Thomson, A. V. Martinet . - 4th ed., 10th impr. Oxford : Oxford University Press, 1990
BC	Vince, Michael. First certificate language practice : with key / Michael Vince . - 1st ed. Oxford : Heinemann, 1996

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