@book{12180,
	author = {Verzani, John.},
	title = {Using R for introductory statistics /},
	publisher = {Chapman & Hall/CRC,},
	year = {c2005.},
	address = {Boca Raton :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0646/2004058244-d.html}
}