APA-referens (7:e uppl.)

Varner, W. W. (1957). Computing with desk calculators. Rinehart.

Chicago-referens (17:e uppl.)

Varner, Walter W. Computing with Desk Calculators. New York: Rinehart, 1957.

MLA-referens (9:e uppl.)

Varner, Walter W. Computing with Desk Calculators. Rinehart, 1957.