- Author: Daniel W. Hart
- Language: English
- Year: 2010
- Author: Daniel W. Hart
- Language: Portuguese
- Year: 2011
- Author: Daniel W. Hart
- Language: Spanish
- Year: 2001
- Author: Daniel A. Hart (auth.)
- Language: English
- Year: 1992
- Author: Daniel W. Hart
- Language: English
- Year: 2010
- Author: Daniel W. Hart
- Language: Spanish
- Year: 2005