APA (7th ed.) Citation

Morton, R. L., Gray, M., & Rosskopf, M. F. (1964). Modern arithmetic through discovery. Silver Burdett.

Chicago Style (17th ed.) Citation

Morton, Robert Lee, M. Gray, and M. F. Rosskopf. Modern Arithmetic Through Discovery. New Jersey: Silver Burdett, 1964.

MLA (9th ed.) Citation

Morton, Robert Lee, et al. Modern Arithmetic Through Discovery. Silver Burdett, 1964.