1. 1. James R. Beniger, The Control Revolution: Technological and Economic Origins of the Information Society (Cambridge, MA: Harvard University Press, 1986), pp. 21-24.
2. 3. Michael Rogers Rubin and Mary Taylor Huber, The Knowledge Industry in the United States, 1960-1980 (Princeton, NJ: Princeton University Press, 1986), pp. 19, 196.