APA (7th ed.) Citation

Perlick, W. W. (1981). Programmed learning aid for introduction to business (3rd ed.). Learning Systems.

Chicago Style (17th ed.) Citation

Perlick, Walter W. Programmed Learning Aid for Introduction to Business. 3rd ed. Homewood, Ill: Learning Systems, 1981.

MLA (9th ed.) Citation

Perlick, Walter W. Programmed Learning Aid for Introduction to Business. 3rd ed. Learning Systems, 1981.