Newbold, P. (1995). Statistics for business & economics (4th ed.). Prentice-Hall.
Chicago Style aipamenaNewbold, Paul. Statistics for Business & Economics. 4th ed. Englewood Cliffs, N.J: Prentice-Hall, 1995.
MLA aipamenaNewbold, Paul. Statistics for Business & Economics. 4th ed. Prentice-Hall, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.