- Author: Ronald G. Ehrenberg, Robert S. Smith
- Language: English
- Year: 2017
- Author: Ronald G. Ehrenberg and Richard B. Freeman (Auth.)
- Language: English
- Year: 1979
- Author: Ronald G Ehrenberg Robert S. Smith
- Language: English
- Year: 2011
- Author: Ronald G. Ehrenberg
- Language: English
- Year: 1994
- Author: Paula E. Stephan Ronald G. Ehrenberg
- Language: English
- Year: 2007
- Author: Ronald G. Ehrenberg
- Language: English
- Year: 2007
- Author: Paula E. Stephan Ronald G. Ehrenberg
- Language: English
- Year: 2007
- Author: Ronald G. Ehrenberg
- Language: English
- Year: 2000