Pandelis Prevelakis, Nikos Kazantzakis and His Odyssey. A Study of the Poet and the Poem, translated from the Greek by Philip Sherrard, with a prefaction by Kimon Friar, New York: Simon & Schuster, 1961.
Peter Bien, Nikos Kazantzakis and the Linguistic Revolution in Greek Literature, Princeton, N.J.: Princeton University Press, 1972.
Peter Bien, Tempted by happiness. Kazantzakis' post-Christian Christ Wallingford, Pa.: Pendle Hill Publications, 1984.
Peter Bien, Kazantzakis. Politics of the Spirit, Princeton, N.J.: Princeton University Press, 1989.
Darren J. N. Middleton and Peter Bien, ed., God's struggler. Religion in the Writings of Nikos Kazantzakis, Macon, Ga.: Mercer University Press, 1996
Darren J. N. Middleton, Novel Theology: Nikos Kazantzakis' Encounter with Whiteheadian Process Theism, Macon, Ga.: Mercer University Press, 2000.
Darren J. N. Middleton, Scandalizing Jesus?: Kazantzakis' 'Last Temptation of Christ' Fifty Years On, New York: Continuum, 2005.
Darren J. N. Middleton, Broken Hallelujah: Nikos Kazantzakis and Christian Theology, Lanham, Md.: Rowman and Littlefield, 2006.
Helen Kazantzakis, Nikos Kazantzakis. A biography based on his letters, translated by Amy Mims, New York: Simon & Schuster, 1968; Bruno Cassirer, Oxford, 1968; Berkeley: Creative Arts Book Co. for Donald S. Ellis, 1983.
John (Giannes) Anapliotes, The real Zorbas and Nikos Kazantzakis, translated by Lewis A. Richards, Amsterdam: Hakkert, 1978.
James F. Lea, Kazantzakis: The Politics of Salvation, foreword by Helen Kazantzakis, The University of Alabama Press, 1979.
Kimon Friar, The spiritual odyssey of Nikos Kazantzakis. A talk, edited and with an introduction by Theofanis G. Stavrou, St. Paul, Minn.: North Central Pub. Co., 1979.
Morton P. Levitt, The Cretan Glance, The World and Art of Nikos Kazantzakis, Columbus, OH: Ohio State University Press, 1980.
