8Anne S. Tsui, TerriD. Egan, CharlesA. O'ReillyIII. , 1992. Being different:relational demography and organizational attachment, Administrative Science Quarterly, vol 37, (4) : 549 - 579.
9Blau P. M. , 1964, Exchange and Power in Social Life. New York : Wiley.
10Chun Hui, Cynthia Lee &Denise M. Rousseau ,2004. Psychological contract and organizational citizenship behavior in China: investigating generalizability and instrumentality, Journal of Applied Psychology, vol 89 : 311 - 321.