- Author: Raymond Smullyan
- Language: Italian
- Year: 1990
Donna o Tigre?
epub
- Author: Raymond Smullyan
- Language: Italian
- Year: 1985
- Author: Raymond Smullyan
- Language: Italian
- Year: 1987
- Author: Raymond Smullyan
- Language: Italian
- Year: 1981
- Author: Raymond Smullyan
- Language: English
- Year: 2015
- Author: Raymond Smullyan
- Language: French
- Year: 2012
- Author: Raymond Smullyan
- Language: English
- Year: 2015
- Author: Raymond Smullyan
- Language: English
- Year: 2015
- Author: Raymond Smullyan
- Language: Spanish
- Year: 1991
FOREVER UNDECIDED
epub
- Author: Raymond Smullyan
- Language: English
- Year: 1987