Burkhardt, R. (2008). Reputation management in small and medium-sized enterprises: Analysis and evaluation of the use of reputation management : a survey of small and medium-sized enterprises in Germany. Diplomica Verlag.

Burkhardt, Robert. Reputation Management in Small and Medium-sized Enterprises: Analysis and Evaluation of the Use of Reputation Management : A Survey of Small and Medium-sized Enterprises in Germany. Hamburg: Diplomica Verlag, 2008.

Burkhardt, Robert. Reputation Management in Small and Medium-sized Enterprises: Analysis and Evaluation of the Use of Reputation Management : A Survey of Small and Medium-sized Enterprises in Germany. Diplomica Verlag, 2008.