APA-referens (7:e uppl.)

Freund, J. E. (1973). Modern elementary statistics (4th.). Prentice-Hall.

Chicago-referens (17:e uppl.)

Freund, John E. Modern Elementary Statistics. 4th. New Jersey: Prentice-Hall, 1973.

MLA-referens (9:e uppl.)

Freund, John E. Modern Elementary Statistics. 4th. Prentice-Hall, 1973.