@book{14456,
	author = {Tignor, Robert L . and Adelman, Jeremy},
	title = {Worlds together, worlds apart / Vol. 2, From 1000 CE to the present/},
	publisher = {W. W.  Norton & Company, },
	year = {2011.},
	address = {New York :},
	edition = {3rd ed.},
	note = {Includes bibliography and index.}
}