@book{10047,
	author = {Drew, Clifford J., and Hardman, Michael L.},
	title = {Intellectual disabilities across the lifespan /},
	publisher = {Pearson Merril Prentice Hall,},
	year = {c2007.},
	address = {Upper Saddle River, N.J. :},
	edition = {9th ed.},
	url = {http://www.loc.gov/catdir/toc/ecip061/2005029501.html}
}