LEVIN RICHARD I. (2005). STATISTICS FOR MANAGEMENT. PEARSON PRENTICE HALL.
Chicago Style aipamenaLEVIN RICHARD I. STATISTICS FOR MANAGEMENT. NEW DELHI: PEARSON PRENTICE HALL, 2005.
MLA aipamenaLEVIN RICHARD I. STATISTICS FOR MANAGEMENT. PEARSON PRENTICE HALL, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.