References
- R. V. Hogg and A. T. Craig, Introduction to Mathematical Statistics, 3rd ed., Macmillan, New York, 1970.
- E. Kreyszig, Introductory Mathematical Statistics, Principles and Methods, John Wiley, New York, 1970.
- R. J. Larsen and M. L. Marx, An Introduction to Mathematical Statistics and Its Applications, 3rd ed., Prentice Hall, Upper Saddle River NJ, 2001.