@book{21464,
	author = {Riedel, Marc.},
	title = {Research Strategies for Secondary Data :},
	publisher = {Sage Publications Inc.,},
	year = {c2000.},
	address = {Thousand Oaks, Calif. :},
	url = {http://www.loc.gov/catdir/enhancements/fy0655/99006836-d.html}
}