Freund, J. E. (2001). Modern elementary statistics (10th ed.). Prentice Hall.
Chicago Style aipamenaFreund, John E. Modern Elementary Statistics. 10th ed. Upper Saddle River, N.J: Prentice Hall, 2001.
MLA aipamenaFreund, John E. Modern Elementary Statistics. 10th ed. Prentice Hall, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.