
- Author: Smullyan Raymond M
- Language: English
- Year: 1987

- Author: Smullyan Raymond M
- Language: English
- Year: 1987

- Author: Posamentier Alfred S
- Language: English
- Year: 2003

- Author: Camerer Colin F
- Language: English
- Year: 2011

- Author: Camerer Colin F
- Language: English
- Year: 2011