@book{125155,
	author = {Prior, A. N. and Geach, P. T.},
	title = {Objects of thought /},
	publisher = {Clarendon Press,},
	year = {1971.},
	address = {Oxford:},
	url = {http://www.loc.gov/catdir/enhancements/fy0606/78590461-d.html}
}