- Author: Irving Singer, Moreland Perkins
- Language: English
- Year: 2010
- Author: Irving Singer
- Language: English
- Year: 2008
- Author: Irving Singer
- Language: English
- Year: 2009
- Author: Irving Singer
- Language: English
- Year: 2009
- Author: Irving Singer
- Language: English
- Year: 2009
- Author: Irving Singer
- Language: Spanish
- Year: 2017
- Author: Irving Singer
- Language: Spanish
- Year: 2017
- Author: Irving Singer
- Language: Spanish
- Year: 2017
- Author: Irving Singer
- Language: Spanish
- Year: 1984
De Platón a Lutero
epub
- Author: Irving Singer
- Language: Spanish
- Year: 1966