Gratzer, G. A. (2011). Train your brain: A year's worth of puzzles. A.K. Peters/CRC Press.
Chicago Edition CitationGratzer, George A. Train Your Brain: A Year's Worth of Puzzles. Boca Raton, FL: A.K. Peters/CRC Press, 2011.
MLA Edition CitationGratzer, George A. Train Your Brain: A Year's Worth of Puzzles. A.K. Peters/CRC Press, 2011.
Warning: These citations may not always be 100% accurate.