Zaragoza:

BB	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
BB	Eastwood, John. Oxford practice grammar : intermediate : with answers / John Eastwood . 1st published Oxford [etc.] : Oxford University Press, 2006
BB	Oxenden, Clive. English file : Intermediate / Clive Oxenden, Christina Latham-Koenig with Jane Hudson. 3ª ed. Oxford : Oxford University Press, 2013
BC	Alexander, L. G.. Longman English grammar / L.G. Alexander . - [1st ed.] London ; New York : Longman, 1988
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 : with answers / Raymond Murphy . - 2nd ed., 14th pr. Cambridge : University Press, 1999
BC	Rowan, Jean. New english grammar for bachillerato / Jean Rowan Limassol (Cyprus) : Burlington Books, cop. 2005
BC	Swan, Michael. How English works : A grammar practice book : with answers / Michael Swan & Catherine Walter . - [20th reimpr.] Oxford : Oxford University Press, 2009
BC	Swan, Michael. Practical English usage / Michael Swan . - [1st ed.], 16th imp. Oxford : Oxford University Press, 1988
BC	Thomas, B.J.. Intermediate Vocabulary / B.J. Thomas . - , New ed., 14th. impr. Edinburgh : Longman, 2008
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

Zaragoza:

BB	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
BB	Eastwood, John. Oxford practice grammar : intermediate : with answers / John Eastwood . 1st published Oxford [etc.] : Oxford University Press, 2006
BB	Oxenden, Clive. English file : Intermediate / Clive Oxenden, Christina Latham-Koenig with Jane Hudson. 3ª ed. Oxford : Oxford University Press, 2013
BC	Alexander, L. G.. Longman English grammar / L.G. Alexander . - [1st ed.] London ; New York : Longman, 1988
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 : with answers / Raymond Murphy . - 2nd ed., 14th pr. Cambridge : University Press, 1999
BC	Rowan, Jean. New english grammar for bachillerato / Jean Rowan Limassol (Cyprus) : Burlington Books, cop. 2005
BC	Swan, Michael. How English works : A grammar practice book : with answers / Michael Swan & Catherine Walter . - [20th reimpr.] Oxford : Oxford University Press, 2009
BC	Swan, Michael. Practical English usage / Michael Swan . - [1st ed.], 16th imp. Oxford : Oxford University Press, 1988
BC	Thomas, B.J.. Intermediate Vocabulary / B.J. Thomas . - , New ed., 14th. impr. Edinburgh : Longman, 2008
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