@book{26662,
	author = {Fuchs, Marjorie and Bonner, Margaret},
	title = {Focus on grammar },
	publisher = {Pearson Longman },
	year = {c2006.},
	address = {White Plains, NY },
	edition = {3a ed.},
	note = {Folio de cd rom: 1555. Workbook, y Studen book}
}