Change: “Drive and Mechanism in Social Behavior”). New York: Columbia University Press. 2. Hall, Calvin, S. (1954). A Primer in Freudian Psychology, (pg. 13). Meridian Book. Further reading● Ellenberger, Henri F. (1981). The Discovery of the Unconscious: The History and Evolution of Dynamic Psychiatry. Basic Books.   View changes from previous version. (Word count: 232)

Change:  2. Hall, Calvin, S. (1954). A Primer in Freudian Psychology, (pg. 13). Meridian Book. 3. Freud, Sigmund (1923). The Ego and the Id, (pgs. 4-5). W.W. Norton & Company. 4. Ahles, Scott, R. (2004). Our Inner World: A Guide to Psychodynamics and Psychotherapy, (pgs. 1-2). John Hopkins University Press.   View changes from previous version. (Word count: 242)