Fiedler's Contingency Theory References

Allport, Gordon W. The Nature of Personality: Selected Papers. Cambridge, MA: Addison-Wesley, 1950. Questia. Web. 1 Apr. 2011.
Evans, Richard I. Gordon Allport: The Man and His Ideas. 1st ed. New York: E.P. Dutton, 1970. Questia. Web. 1 Apr. 2011.
http://en.wikipedia.org/wiki/Gordon_Allport