1. Progressive makes big claims;Salter;Fast Company,1998
2. An independent agent is one who agrees to perform services or supply commodities under a contract. In carrying out his/her contract, he/she is not under the control of, or an employee, of the party with whom he/she contracts.
3. Stepanek, M., Q&A with Progressive's Peter Lewis, Businessweek Online, September 2000.
4. Loomis, C.J., Sex. Reefer? and auto insurance Fortune, 8 July 1995.
5. Siggelkow, N. and Porter, M.E., Progressive Corporation, Harvard Business School, Case Study #9–797–109, May 14, 1998.