@book{13703,
	author = {Seidl, Jennifer. and Swan, Michael.},
	title = {Basic english usage exercises /},
	publisher = {Oxford Univ Pr (Sd),},
	year = {1987.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0194311880/chopaconline-20}
}