[i]. H. G. Barnett, Innovation: The Basis of cultural Change (New York: McGraw-Hill, paperbound, ed., 1953) Part 2, 97-180.
[ii]. James C. Davies, Human Nature in Politics (New York: John Wiley & Sons, 1963) 9.
[iii]. Chalmers Johnson, Revolutionary Change (Boston, Little Brown and Company, 1966) 24.