@book{70352,
	author = {Kellstedt, Paul M. and Whitten, Guy D.},
	title = {The fundamentals of political science research /},
	publisher = {Cambridge University Press,},
	year = {2009},
	address = {Cambridge :},
	url = {http://www.loc.gov/catdir/toc/ecip0826/2008035250.html}
}