@book{3146,
	author = {Schroeder, Larry D. and Sjoquist, David L.},
	title = {Understanding regression analysis :},
	publisher = {Sage Publications,},
	year = {c1986.},
	address = {Beverly Hills :},
	url = {http://www.loc.gov/catdir/enhancements/fy0654/85063790-d.html}
}