APA-referens (7:e uppl.)

Summers, G. W., Peters, W. S., & Armstrong, C. P. (1977). Basic statistics in business and economics (2d ed.). Wadsworth Pub. Co..

Chicago-referens (17:e uppl.)

Summers, George W., William S. Peters, och Charles P. Armstrong. Basic Statistics in Business and Economics. 2d ed. Belmont, Calif.: Wadsworth Pub. Co., 1977.

MLA-referens (8:e uppl.)

Summers, George W., et al. Basic Statistics in Business and Economics. 2d ed. Wadsworth Pub. Co., 1977.