Albright, S. C., Winston, W. L., & Zappe, C. J. (2011) Data Analysis and Decision Making (4th ed.). Mason, Ohio: Southwestern/ Cengage Learning.
 Hoaglin, D., & Velleman, P (1995). A Critical Look at Some Analyses of Major League and Baseball Salaries. The American Statistician, 49, 277-285.
 USA Today.
 Lewis, M. (2003). Moneyball: The Art of Winning an Unfair Game. New York: W. W. Norton & Company.
 Watnik, M. R. (1988). Pay for Play: Are Baseball Salaries Based on Performance? Journal of Statistics Education, 6.