APA-referens (7:e uppl.)

Orr, D. B. (1995). Fundamentals of applied statistics and surveys. Chapman and Hall.

Chicago-referens (17:e uppl.)

Orr, David B. Fundamentals of Applied Statistics and Surveys. New York: Chapman and Hall, 1995.

MLA-referens (9:e uppl.)

Orr, David B. Fundamentals of Applied Statistics and Surveys. Chapman and Hall, 1995.