Agnew, P. L. (1942). Office machines course: Full keyboard adding listing machine, ten-key adding listing machine, crank-driven calculator, key-driven calculator. South-western Pub. Co..
Chicagoスタイル(17版)引用形式Agnew, Peter Lawrence. Office Machines Course: Full Keyboard Adding Listing Machine, Ten-key Adding Listing Machine, Crank-driven Calculator, Key-driven Calculator. Cincinnati : New York: South-western Pub. Co., 1942.
MLA(8版)引用形式Agnew, Peter Lawrence. Office Machines Course: Full Keyboard Adding Listing Machine, Ten-key Adding Listing Machine, Crank-driven Calculator, Key-driven Calculator. South-western Pub. Co., 1942.
警告: この引用は必ずしも正確ではありません.