APA (7th ed.) Citation

Van Kaam, A. L. (1969). Existential foundations of psychology. Image Books.

Chicago Style (17th ed.) Citation

Van Kaam, Adrian L. Existential Foundations of Psychology. Garden City, N. Y.: Image Books, 1969.

MLA (9th ed.) Citation

Van Kaam, Adrian L. Existential Foundations of Psychology. Image Books, 1969.