@book{190752,
	author = {Ashton, Dore.},
	title = {A critical study of Philip Guston /},
	publisher = {University of California Press,},
	year = {1990.},
	address = {Berkeley :},
	note = {Originally published: Yes, but--. New York : Viking Press, 1976. With new introd.},
	url = {http://www.loc.gov/catdir/bios/ucal051/89020505.html}
}