a. Duda, R. O. Hart, P. E. D., and Stork, G. Pattern Classification. New York, NY: Wiley, 2000. ISBN: 0471056693
b. Pattern Recognition and Machine Learning (Information Science and Statistics), by Christopher M. Bishop, Springer; 1 edition (August 17, 2006)
c. Machine Learning (Hardcover), by Tom M. Mitchell, McGraw-Hill