APA-referens (7:e uppl.)

Wonnacott, T. H., & Wonnacott, R. J. (1990). Introductory statistics for business and Economics (4th.ed.). John Wiley & sons.

Chicago-referens (17:e uppl.)

Wonnacott, Thomas H., och Ronald J. Wonnacott. Introductory Statistics for Business and Economics. 4th.ed. New York: John Wiley & sons, 1990.

MLA-referens (9:e uppl.)

Wonnacott, Thomas H., och Ronald J. Wonnacott. Introductory Statistics for Business and Economics. 4th.ed. John Wiley & sons, 1990.