@book{4815,
	author = {Halvorson, Michael.},
	title = {Microsoft Visual Basic .NET step by step :},
	publisher = {Microsoft Press,},
	year = {2002.},
	address = {Redmond, Wash. :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy1004/2002045517-d.html}
}