* On Being Involved: A Psychological Study of Human Totality
* The Art of Existential Counselling
* Psychology and Religion: A Dialogue
* Existential Foundations of Psychology: A Personal Account
* The Practice of Existential Psychotherapy: The Search for Meaning in the Patient's World
* The Broken Image of God: Man and God in Existential Psychotherapy
* Religious Existentialism: The Philosophy of Karl Jaspers
* Existential Psychotherapy: The Search for Meaning
Articles:
* "The Existential Basis of Psychotherapy"
* "The Existential Foundations of Psychology"
* "The Broken Image of God"
* "The Existential Dialogue: A New Model for Psychotherapy"
* "Existential Psychotherapy and the Search for Meaning"
* "The Practice of Existential Psychotherapy"
* "The Religious Dimension in Psychotherapy"
* "The Spirituality of the Existential Therapist"
Book chapters:
* "Existential Psychology" in The Corsini Encyclopedia of Psychology and Behavioral Science
* "The Existential Foundations of Psychotherapy" in The Handbook of Psychotherapy
* "The Religious Dimension in Psychotherapy" in The Handbook of Religion and Health
* "The Spirituality of the Existential Therapist" in The Spiritual Dimension in Psychotherapy
* "The Practice of Existential Psychotherapy" in The Encyclopedia of Psychotherapy