Frederick F. Reichheld (edit name/settings)

Bibliography

1. (2006)

   The Ultimate Question

2. (1996)

   The Loyalty Effect: The Hidden Force Behind Growth, Profits, and Lasting Value

3. Loyalty Rules! How Leaders Build Lasting Relationships

4. Kokyaku roiyaruti o siru kyuukyoku no situmon (JPN)

5. Kokyaku roiyaruti no manezimento (JPN)