- Author: Ludwig Wittgenstein
- Language: English
- Year: 2009
- Author: Ludwig Wittgenstein
- Language: English
- Year: 2001
- Author: Ludwig Wittgenstein
- Language: English
- Year: 1984
- Author: Ludwig Wittgenstein
- Language: English
- Author: Ludwig Wittgenstein Gilles-Gaston Granger
- Language: French
- Year: 1993
- Author: Ludwig Wittgenstein
- Language: English
- Year: 1974
- Author: Ludwig Wittgenstein Alice Ambrose Margaret MacDonald
- Language: English
- Year: 2001
De la certitude
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- Author: Ludwig Wittgenstein
- Language: French
- Year: 1987
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- Language: Italian
- Author: Ludwig Wittgenstein
- Language: English
- Year: 1999