@book{28987,
	author = {Cooper, Harris M. and Cooper, Harris M.},
	title = {Synthesizing research :},
	publisher = {Sage Publications,},
	year = {c1998.},
	address = {Thousand Oaks, Calif. :},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0658/97033792-d.html}
}