Gessen, M. (2009). Perfect rigor: A genius and the mathematical breakthrough of the century. Houghton Mifflin Harcourt.
Citazione stile Chigago Style (17a edizione)Gessen, Masha. Perfect Rigor: A Genius and the Mathematical Breakthrough of the Century. Nueva York: Houghton Mifflin Harcourt, 2009.
Citatione MLA (9a ed.)Gessen, Masha. Perfect Rigor: A Genius and the Mathematical Breakthrough of the Century. Houghton Mifflin Harcourt, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.