- Author: Richard Johnsonbaugh
- Language: English
- Year: 2017
- Author: Richard Johnsonbaugh
- Language: English
- Year: 2013
- Author: Richard Johnsonbaugh
- Language: English
- Year: 1981
- Author: Richard Johnsonbaugh
- Language: Spanish
- Year: 2005
- Author: Richard Johnsonbaugh
- Language: Spanish
- Year: 2005
- Author: Richard Johnsonbaugh
- Language: Spanish
- Year: 2005
- Author: Richard Johnsonbaugh
- Language: English
- Year: 2017
- Author: Richard Johnsonbaugh
- Language: English
- Year: 2017
- Author: Richard Johnsonbaugh
- Language: English
- Year: 2007
- Author: Richard Johnsonbaugh
- Language: english
- Year: 2007