@book{201884,
	author = {Hopkins, Terence K. and Wallerstein, Immanuel Maurice,},
	title = {World-systems analysis :},
	publisher = {Sage Publications,},
	year = {c1982.},
	address = {Beverly Hills, Calif. :},
	url = {http://www.loc.gov/catdir/enhancements/fy0660/82000670-d.html}
}