1. Aaker D, Joachimsthaler E (2001) Brand Leadership. Die Strategie für Siegermarken. Financial Times Prentice Hall, München
2. Aaker DA (1991) Managing brand equity: capitalizing on the value of a brand name. Free Press, New York
3. Aaker DA (1996) Building strong brands. Free Press, New York
4. ACE Group (2013) Reputation at risk. http://www.acegroup.com/global-assets/documents/Europe-Corporate/Thought-Leadership/ace_reputation_at_risk_july_2013.pdf . Accessed 10 June 2014
5. Ader CR (1995) A longitudinal-study of agenda-setting for the issue of environmental-pollution. J Mass Commun Quarter 72(2):300–311