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Reward systems : does yours measure up?
Kerr, Steven, (2009)
The carrot principle : how the best managers use recognition to engage their people, retain talent, and accelerate performance
Gostick, Adrian Robert, (2007)
Punching in : one man's undercover adventures on the front lines of America's best-known companies
Frankel, Alex, (2007)
Make their day! : Employee recognition that works ; simple ways to boost morale, productivity and profits
Ventrice, Cindy, (2003)