Friedman, Maurice. "The Modern Vitalist: Bergson and Kazantzakis". In his To Deny Our Nothingness: Contemporary Images of Man (A Delta book. New York: Delacorte Press, 1967): 63-79.

Also in his To Deny Our Nothingness: Contemporary Images of Man. With a new Preface and Appendix by the author. Chicago and London: The University of Chicago Press, 1978: 63-79 (ISBN 0226263371).

Καζ. 1996.