LEVIN, R. I. (1994). Statistics For Management Richard I. Levin. Prentice-Hall.
Chicago Style aipamenaLEVIN, Richard I. Statistics For Management Richard I. Levin. Prentice-Hall, 1994.
MLA aipamenaLEVIN, Richard I. Statistics For Management Richard I. Levin. Prentice-Hall, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.