@book{352953,
	author = {Townsend, Grant C.;Pinkerton, Sandra K.;Rogers, James R.;Bockmann, Michelle R.;Hughes, Toby E.},
	title = {Twin Studies},
	publisher = {University of Adelaide Press},
	year = {2015},
	url = {http://jstor.org/stable/10.20851/j.ctt1t3057n}
}