@book{2744,
	author = {Larsen, Clark Spencer.},
	title = {Our origins :},
	publisher = {W.W. Norton & Co.,},
	year = {2008.},
	address = {New York :},
	edition = {1st ed.},
	url = {http://www.loc.gov/catdir/toc/ecip089/2008001300.html}
}