@book{52164,
	author = {Johnston, James M. and Pennypacker, H.},
	title = {Strategies and tactics of behavioral research /},
	publisher = {Routledge,},
	year = {c2009},
	address = {New York :},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0817/2008019278.html}
}