@book{215608,
	author = {Kreuger, Larry. and Neuman, William Lawrence},
	title = {Social work research methods},
	publisher = {Pearson/Allyn and Bacon},
	year = {c2006.},
	address = {Boston},
	note = {Rev. ed. of : Social work research methods / W. Lawrence Neuman. 1st ed. 2003.}
}