Freed, L. (2013). Innovating analytics: Word of mouth index--use the next generation of net promoter to increase sales and drive results. John Wiley & Sons, Inc..

Freed, Larry. Innovating Analytics: Word of Mouth Index--use the Next Generation of Net Promoter to Increase Sales and Drive Results. Hoboken, New Jersey: John Wiley & Sons, Inc., 2013.

Freed, Larry. Innovating Analytics: Word of Mouth Index--use the Next Generation of Net Promoter to Increase Sales and Drive Results. John Wiley & Sons, Inc., 2013.