Edwards, C. W. (1963). A test of arithmetic principles, elementary form. University Microfilms.
Citación estilo ChicagoEdwards, Charles Walter. A Test of Arithmetic Principles, Elementary Form. [Ann Arbor, Mich: University Microfilms, 1963.
Cita MLAEdwards, Charles Walter. A Test of Arithmetic Principles, Elementary Form. University Microfilms, 1963.
Warning: These citations may not always be 100% accurate.