Chapter 4

1. CMO Council, “The Leaders in Loyalty: Feeling the Love from the Loyalty Clubs,” January 25, 2010, www.cmocouncil.org.

2. Philipp Schmitt, Bernd Skiera, and Christophe Van den Bulte, “Referral Programs and Customer Value,” American Marketing Association Journal of Marketing, Vol. 75, No. 1, January 2011.

3. Dr. Gary Chapman, The 5 Love Languages: The Secret to Love That Lasts (Chicago, IL: Northfield Publishing, 2010).

4. CMO Council, “The Leaders in Loyalty.”

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