@book{15901,
	author = {Murphy, Raymond},
	title = {Essential grammar in use : a reference and practice book for elementary learners of English : without answers},
	publisher = {Cambridge University Press,},
	year = {2009.},
	address = {[S.l.] :},
	edition = {4th edition. },
	url = {http://10.10.170.122:8080/browse/book/2796}
}