1. Babbitt, Tripp (2009), “John Chambers (Cisco) Declares ‘Command and Control Is Dead,’” April 14 (available at http://blog.newsystemsthinking.com/john-chambers-ciscodeclares- command-and-control-is-dead/).
2. Dixon, Matthew, and Brent Adamson (2011), The Challenger Sale: Taking Control of the Customer Conversation, Knoxville, TN: Portfolio Hardcover.
3. Martin, Roger L. (2009), The Design of Business: Why Design Thinking Is the Next Competitive Advantage, Boston: Harvard Business School Press.
4. Rackham, Neil (2011), “Some Difficult Issues in Selling Today,” Keynote speech delivered at the Sales Educators Academy, Rollins College, Winter Haven, FL, June 2.
5. Rackham, Neil, and John DeVincentis (1999), Rethinking the Sales Force, New York: McGraw-Hill.