APA (7th ed.) Citation

Gessen, M. (2009). Perfect rigor: A genius and the mathematical breakthrough of the century. Houghton Mifflin Harcourt.

Chicago Style (17th ed.) Citation

Gessen, Masha. Perfect Rigor: A Genius and the Mathematical Breakthrough of the Century. Nueva York: Houghton Mifflin Harcourt, 2009.

MLA (9th ed.) Citation

Gessen, Masha. Perfect Rigor: A Genius and the Mathematical Breakthrough of the Century. Houghton Mifflin Harcourt, 2009.