- Author: Robert B. Denhardt Janet V. Denhardt Maria P. Aristigueta Kelly Rawlings
- Language: English
- Year: 2020
- Author: Robert B. Denhardt, Janet V Denhardt, Maria P Aristigueta, Kelly Rawlings
- Language: English
- Year: 2019
- Author: Robert B. Denhardt Janet V. Denhardt Maria P. Aristigueta
- Language: English
- Year: 2016
- Author: Robert B. Denhardt Janet V. Denhardt Tara A. Blanc
- Language: English
- Year: 2013
- Author: Janet Vinzant Denhardt Robert B. Denhardt
- Language: English
- Year: 2007
- Author: Robert B. Denhardt Janet Vinzant Denhardt
- Language: English
- Year: 2005