1. CARDNO, J. A. 1962. Natural limits and change of content in the history of psychology. Psychol. Recor., 12, 289–298.
2. FAY, J. W. 1939. American psychology before William James. New Brunswick, N. J.: Rutgers Univer. Press.
3. FLEMING, W. 1876. The vocabulary of philosophy. (H. Calderwood, Ed.) (3rd ed.) London: Griffin.
4. HAVEN, J. 1860. Mental philosophy: including the intellect, sensibilities, and will. Boston: Gould & Lincoln. (Preface, 1857.)
5. JAMES, W. 1890. The principles of psychology. 2 Vols. London: Macmillan.