APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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