- Author: Martin Gardner
- Language: English
- Year: 1983
- Author: Martin Gardner
- Language: English
- Year: 1987
- Author: Robert W. Floyd Richard Beigel
- Language: English
- Year: 1994
- Author: Martin Gardner
- Language: English
- Year: 1986
- Author: Sidney Harris
- Language: English
- Year: 1992
- Author: Martin Gardner
- Language: English
- Year: 1982
- Author: Martin Gardner
- Language: English
- Year: 1982
Knot Book
djvu
- Author: Colin Conrad Adams
- Language: English
- Year: 1994
- Author: Brian Hayden
- Language: English
- Year: 1992
- Author: Martin Gardner M. Gardner
- Language: English
- Year: 1987