@book{37456,
	author = {Robertson, Simon.},
	title = {Spheres of reason},
	publisher = {Oxford University Press,},
	year = {c2009.},
	series = {Mind association occasional series},
	address = {Oxford :},
	url = {http://dx.doi.org/10.1093/acprof:oso/9780199572939.001.0001}
}