@book{255436,
	author = {Navidi, William },
	title = {Statistics for engineers and scientists /},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2008.},
	address = {Boston :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip074/2006036979.html}
}