1. Allan, John., (2001). How to be Better at Motivating People, New Delhi: Kogan Page India Private Limited, p.15.
2. Aronoff, C., (1975). The Rise of the Behavioural Perspective in Selected General Management Textbooks: An Empirical Investigation through Content Analysis, Academy of Management Journal, 18, no.4.
3. Bedeian, A.G., (1993). Management, Third Edition, New York: Dryden Press.
4. Berelson, Bernard., and Gary A. Steiner (1964). Human Behaviour: An Inventory of Scientific Findings, New York: Harcourt Brace and World, p. 240.
5. Brink, V.Z., and J.A. Cashin (1958), Internal Auditing (New York: Ronald Press).