@book{200950,
	author = {Weeks, John Robert.},
	title = {Population :},
	publisher = {Wadsworth/Thomson Learning,},
	year = {c2002.},
	address = {Belmont, CA :},
	edition = {8th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1515/2001046931-b.html}
}