@book{29227,
	author = {Gelman, Andrew and Hill, Jennifer},
	title = {Data analysis using regression and multilevel/hierarchical models},
	publisher = {Cambridge University Press,},
	year = {2007},
	series = {Analytical methods for social research},
	address = {Cambridge : },
	note = {"Purchased under NBHM grant for the year 2007-2008"}
}