- Author: Fogelin Robert J., Sinnott-Armstrong Walter
- Language: English
- Year: 2010
- Author: Wittgenstein Ludwig, Fogelin Robert J., Wittgenstein Ludwig
- Language: English
- Year: 2009
- Author: Hume David, Fogelin Robert J., Hume David
- Language: English
- Year: 2003
- Author: Hume David, Fogelin Robert J., Hume David
- Language: English
- Year: 2003