Introduction to arithmetic :
preliminary study to prepare for the high school equivalency examination in general mathematical ability /
General ed., Angelica W. Cass. Prepared by Educational Systems Corporation.

APA Citation

Cass, A. W., Educational Systems Corporation. (1972). Introduction to arithmetic: preliminary study to prepare for the high school equivalency examination in general mathematical ability. New York: Cambridge Book Company.

MLA Citation

Cass, AngeĢlica W, and Educational Systems Corporation. Introduction to Arithmetic: Preliminary Study to Prepare for the High School Equivalency Examination In General Mathematical Ability. New York: Cambridge Book Company, 1972.

Warning: These citations may not always be complete (especially for serials).