@book{38210,
	author = {Vartanian, Thomas P.},
	title = {Secondary data analysis},
	publisher = {Oxford University Press,},
	year = {2011.},
	series = {Pocket guides to social work research methods},
	address = {New York ;},
	url = {http://dx.doi.org/10.1093/acprof:oso/9780195388817.001.0001}
}