APA (7th ed.) Citation

Gratzer, G. A. (2011). Train your brain: A year's worth of puzzles. AK Peters/CRC Press.

Chicago Style (17th ed.) Citation

Gratzer, George A. Train Your Brain: A Year's Worth of Puzzles. Boca Raton, Forida: AK Peters/CRC Press, 2011.

MLA (9th ed.) Citation

Gratzer, George A. Train Your Brain: A Year's Worth of Puzzles. AK Peters/CRC Press, 2011.

Warning: These citations may not always be 100% accurate.