@book{14638,
	author = {Pettijohn, Terry F.},
	title = {Sources.},
	publisher = {McGraw Hill Contemporary Learning Series,},
	year = {c2007.},
	address = {Dubuque, IA :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0665/2006279468-d.html}
}