Burton, David. The History of Mathematics: An Introduction. Dubuque, Iowa: William C. Brown, 1991.
Cooke, Roger. The History of Mathematics: A Brief Course. New York: John Wiley & Sons, 1997.
Eves, Howard. An Introduction to the History of Mathematics. Philadelphia: Saunders College Publishing, 1990.
Masotti, Arnaldo. “Tartaglia,” Dictionary of Scientific Biography. New York: Charles Scribner’s Sons Inc., 1976, Vol. XIII, pp. 258-262.
O'Connor, J. J. and E. F. Robertson, "Nicolo Tartaglia," MacTutor History of Mathematics Archive, 2005. http://www-history.mcs.st-and.ac.uk/Biographies/Tartaglia.html
Smith, David E. History of Mathematics. 2 vols. New York: Dover Publications, 1950.
Suzuki, Jeff. A History of Mathematics. Upper Saddle River, NJ: Prentice Hall, 2002.
For more on Tartaglia and the solution to cubic equations, see the the Convergence article, How Tartaglia Solved the Cubic Equation, by the same author.