APA (7th ed.) Citation

Mason, R. D. (1978). Programmed learning aid for business and consumer mathematics. Learning Systems.

Chicago Style (17th ed.) Citation

Mason, Robert D. Programmed Learning Aid for Business and Consumer Mathematics. Homewood, Ill: Learning Systems, 1978.

MLA (9th ed.) Citation

Mason, Robert D. Programmed Learning Aid for Business and Consumer Mathematics. Learning Systems, 1978.