@book{267901,
	author = {Williams, Robert Chadwell,},
	title = {The historian's toolbox :},
	publisher = {M.E. Sharpe,},
	year = {c2007},
	address = {Armonk, N.Y. :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip072/2006032333.html}
}