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Boomerang! : coach your team to be the best and see customers come back time after time!
Drake-Knight, Nick, (2007)
Brand engagement : how employees make or break brands
Buckingham, Ian P., (2008)
Mehr Kundenbindung durch Organisationales Lernen : Konzept, Modellierung, empirische Befunde
Wüllenweber, Harald, (2003)
Fresh passion
Brown, Michael D., (2013)