"Published ... 1966 by Northwestern University Press. Originally published in French under the title Le Volontaire et l'involontaire, copyright (c) 1950 by Aubier Editions Montaigne"--T.p. verso.
Freedom and nature : the voluntary and the involuntary by Paul Ricœur. ISBN 9780810123984. Published by Northwestern University in 2007. Publication and catalogue information, links to buy online and reader comments.