Citazione Stile APA (7a Edizione)

Edwards, C. W. (1963). A test of arithmetic principles, elementary form. University Microfilms.

Citazione stile Chigago Style (17a edizione)

Edwards, Charles Walter. A Test of Arithmetic Principles, Elementary Form. [Ann Arbor, Mich: University Microfilms, 1963.

Citatione MLA (9a ed.)

Edwards, Charles Walter. A Test of Arithmetic Principles, Elementary Form. University Microfilms, 1963.