@book{4095,
	author = {ESOL, Cambridge.},
	title = {Cambridge ielts 6 student's book with answers :},
	publisher = {Cambridge University Press,},
	year = {2007.},
	series = {Ielts practice tests.},
	address = {[S.l.] :},
	edition = {Student ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0521693071/chopaconline-20}
}