Varner, W. W. (1957). Computing with desk calculators. Rinehart.
Chicagoスタイル(17版)引用形式Varner, Walter W. Computing with Desk Calculators. New York: Rinehart, 1957.
MLA(9版)引用形式Varner, Walter W. Computing with Desk Calculators. Rinehart, 1957.
警告: この引用は必ずしも正確ではありません.