@book{1031,
	author = {Henn, Matt. and Weinstein, Mark,},
	title = {A critical introduction to social research /},
	publisher = {SAGE,},
	year = {2009.},
	address = {Los Angeles :},
	edition = {2nd ed.},
	note = {Previous ed.: published as A short introduction to social research. 2006.}
}