Edwin K. Simpson

The Selling Cycle: A Unifying Guide for Sales Management Decisions

T. Wotruba, Edwin K. Simpson, 2015 .

A Scale for Source Credibility; Validated in the Selling Context

Edwin K. Simpson, Ruel C. Kahler, 2013 .

Leaders in Selling and Sales Management: The National Account Marketing Association: Turning Silver into Gold

Edwin K. Simpson, 2013 .