Gardner, M. (2014). Knots and borromean rings, rep-tiles, and eight queens: Martin Gardner's unexpected hanging (New edition.). Cambridge university press.
Chicago Edition CitationGardner, Martin. Knots and Borromean Rings, Rep-tiles, and Eight Queens: Martin Gardner's Unexpected Hanging. New edition. New York: Cambridge university press, 2014.
Deismireacht MLAGardner, Martin. Knots and Borromean Rings, Rep-tiles, and Eight Queens: Martin Gardner's Unexpected Hanging. New edition. Cambridge university press, 2014.
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