Edwards, C. W. (1963). A test of arithmetic principles, elementary form. University Microfilms.
Čikaški stil citiranja (17. izdanje)Edwards, Charles Walter. A Test of Arithmetic Principles, Elementary Form. [Ann Arbor, Mich: University Microfilms, 1963.
MLA način citiranja (9. izdanje)Edwards, Charles Walter. A Test of Arithmetic Principles, Elementary Form. University Microfilms, 1963.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.