Cita APA (7a ed.)

Freund, J. E., & Williams, F. J. (1969). Modern business statics. Prentice-Hall.

Cita Chicago Style (17a ed.)

Freund, John E., y Frank Jefferson Williams. Modern Business Statics. Englewood Cliffs: Prentice-Hall, 1969.

Cita MLA (9a ed.)

Freund, John E., y Frank Jefferson Williams. Modern Business Statics. Prentice-Hall, 1969.