توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

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..

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

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.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

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.