Freund, J. E. (1962). Mathematical statistics. Prentice-Hall, Inc.
Cita Chicago (17th ed.)Freund, John E. Mathematical Statistics. Englewood Cliffs, N.J: Prentice-Hall, Inc, 1962.
Cita MLA (9th ed.)Freund, John E. Mathematical Statistics. Prentice-Hall, Inc, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.