@book{566508,
	author = {Langan, John,},
	title = {English skills },
	publisher = {McGraw-Hill,},
	year = {c2006.},
	address = {Boston :},
	edition = {8th ed.},
	note = {Accompanying CD-ROM has title: English skills and English skills with readings.},
	url = {http://www.loc.gov/catdir/enhancements/fy0702/2005928927-t.html}
}