4[1]Patty,Charles Robert.Models for Determining the Feasibility of Direct Selling as a Means of Introducing New Consumer Products[D].Ndiana University,Kelley School of Business,1963.
5[2]Lad,Lawrence Joseph.Policy-making Between Business and Government:Aconceptual Synthesis of Industry Self-regulation and a Case Study Analysis of the Direct Selling Association Code of Conduct[D].Boston University,1985.
6[3]PhD Wert-Gray,Stacia Marie.An empirical assessment of the influence of behavioral decision theory on sales force motivation[D].the University of Oklahoma,1993.
7[4]Phd Camey,John Paul.Internal marketing relationships in entrepreneurial direct selling organizations[D].the University of Oklahoma,1997.
8[5]Yien,Jui-Mei,EdD.Motivational factors affecting Amway Taiwan distributors' intentions to participate in continuing education (China)[D].UNIVERSITY OF SOUTH DAKOTA,2004.
