1) J.S. Adams, “Toward an Understanding of Inequity,” Journal of Abnormal and Social Psychology 67 (1963): 422–36; P.H. Siegel, M. Schraeder, and R. Morrison, “A Taxonomy of Equity Factors,” Journal of Applied Social Psychology 38, no. 1 (2008): 61–75; R. Cropanzana, D.E. Bowen, and S.W. Gilliland, “The Management of Organizational Justice,” Academy of Management Perspectives 21, no. 4 (2007): 34–48.