Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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