@book{51041,
	author = {Tucker, Robert W. and Hendrickson, David C. and ebrary, Inc.},
	title = {Empire of liberty},
	publisher = {Oxford University Press,},
	year = {1990.},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10086832}
}