@book{23363,
	author = {Griffiths, Dawn.},
	title = {Head first statistics /},
	publisher = {O'Reilly Media,},
	year = {c2009.},
	series = {Head first series},
	address = {Sebastopol, CA :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0913/2009278026-b.html}
}