Levin, R. I. (1997). Statistics for Management (2nd.). Tata McGraw-Hill.
Chicago Style aipamenaLevin, Richard I. Statistics for Management. 2nd. New Delhi: Tata McGraw-Hill, 1997.
MLA aipamenaLevin, Richard I. Statistics for Management. 2nd. Tata McGraw-Hill, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.