@book{22262,
	author = {Sanderson, Stephen K.},
	title = {Civilizations and world systems :},
	publisher = {Altamira Press,},
	year = {c1995.},
	address = {Walnut Creek, Calif. :},
	url = {http://www.loc.gov/catdir/enhancements/fy1212/95041739-t.html}
}