[1] Neil Thomas, ed., The Concise Adair on Teambuilding and Motivation (London: Thorogood, 2004) 66, Questia, Web, 11 May 2011.
[2] Applications of Hezberg two factor theory see Weihrich, Heinz. "Quality: the Imperative, the Jungle, and the Two-factor Theory." Industrial Management July-Aug. 1994: 17+. Questia. Web. 9 May 2011.
[3] Saul W. Gellerman, Motivation and Productivity (New York: American Management Association, 1963) 51, Questia, Web, 11 May 2011.