4Clampitt, P. G., & Downs, C. W. Employee Perceptions of the Relationship between Communication and Productivity: A Field Study [J]. Journal of Business Communication, 1994, 30(1): 5-29.
5Krone, K. J. A Comparison of Organizational, Structural, and Relationship Effects on Subordinates upward Influence Choices. Communication Quarterly, 1992, 40(1):1- 15.
6Hartline, Michael D. and O. C. Ferrell. The Management of Service Employees: An Empirical Investigation," Journal of Marketing, 1996, 60 (3), 52-70.