4Porter Michael E. Competitive Advantage[M].Beijing:China Financial and Economic Publishing,1998.
5Baron,R.M,Kenny,D.A. The Moderator-mediator Variable Distinction in Social Psychological Research Conceptual,Strategic,and Statistical Considerations[J].Journal of Personality and Social Psychology,1986,(06).doi:10.1037/0022-3514.51.6.1173.
6Butz,Howard E.,Jr,Leonard D. Goodstein,Customer Value:The Linchpin of Organizational Change[J].Organizational Dynamics,1998,(02).