@book{78670,
	author = {Siegel, Andrew F. and Morgan, Charles J.},
	title = {Statistics and data analysis :},
	publisher = {J. Wiley,},
	year = {1996.},
	address = {New York :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/description/wiley031/95012110.html}
}