@book{876,
	author = {Freeman, Eric,},
	title = {Head First design patterns /},
	publisher = {O'Reilly,},
	year = {c2004.},
	address = {Sebastopol, CA :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0715/2005280819-d.html}
}