Freund, J. E. (1992). Mathematical statistics. Prentice-Hall.
Cita Chicago (17th ed.)Freund, John E. Mathematical Statistics. New Delhi: Prentice-Hall, 1992.
Cita MLA (9th ed.)Freund, John E. Mathematical Statistics. Prentice-Hall, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.