@book{352410,
	author = {Rubin, Allen.},
	title = {Research methods for social work /},
	publisher = {Brooks/Cole Cengage Learning,},
	year = {2011.},
	address = {United states:},
	edition = {7nd Ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1104/2008940675-b.html}
}