APA-referens (7:e uppl.)

Newbold, P. (1995). Statistics for business & economics (4th ed.). Prentice-Hall.

Chicago-referens (17:e uppl.)

Newbold, Paul. Statistics for Business & Economics. 4th ed. Englewood Cliffs, N.J: Prentice-Hall, 1995.

MLA-referens (9:e uppl.)

Newbold, Paul. Statistics for Business & Economics. 4th ed. Prentice-Hall, 1995.