@book{13928,
	author = {Duiker, William J.,},
	title = {Twentieth-century world history /},
	publisher = {Thomson Wadsworth,},
	year = {c2007.},
	address = {Belmont, CA, USA :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1104/2006936431-b.html}
}