Taylor, F. W.
(1967).
The Principles of Scientific Management.
"The knowledge obtained from accurate time study, for example, is a powerful implement, and can be used, in one case to promote harmony between workmen and the management, by gradually educating, training, and leading the workmen into new and better methods of doing work, or, in the other case, it may be used more or less as a club to drive the workmen into doing a larger day's work for approximately the same pay that they had received in the past." (p. 134)
McGregor, D.
(1967).
The Professional Manager.
"Often the provision of opportunities for intrinsic rewards becomes a matter of removing restraints. Progress is rarely fast because people who have become accustomed to control through extrinsic rewards must learn new attitudes and habits before they can feel secure in accepting opportunities for intrinsic rewards at work. If there is not a fair degree of mutual trust, and some positive support, the whole idea may appear highly risky to them." (p. 14)