@book{538,
	author = {Mann, Prem S.},
	title = {Introductory statistics /},
	publisher = {John Wiley & Sons,},
	year = {c2007.},
	address = {Hoboken, NJ :},
	edition = {6th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/fy0607/2005055154.html}
}