Levin, R. I. R. (1994). Statistics for management (5 edition.).
Chicago Style aipamenaLevin, Richard I; Rubin. Statistics for Management. 5 edition. Prentice Hall: New Delhi, 1994.
MLA aipamenaLevin, Richard I; Rubin. Statistics for Management. 5 edition. 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.