@book{1855,
	author = {Ruse, Christina.},
	title = {New Opportunities :},
	publisher = {Pearson Education Limited,},
	year = {2009.},
	series = {Education for life},
	address = {England :},
	edition = {1ª ed. 7ª reimp.},
	note = {Incluye lista de verbos irregulares.}
}