Freud, J. E. (1997). Modern elementary statistics (9th ed.). Prentice Hall.
Citación estilo ChicagoFreud, John E. Modern Elementary Statistics. 9th ed. Singapore: Prentice Hall, 1997.
Cita MLAFreud, John E. Modern Elementary Statistics. 9th ed. Prentice Hall, 1997.
Warning: These citations may not always be 100% accurate.