APA (7th ed.) Citation

Hay, L. E., & Engstrom, J. H. (1981). Programed learning aid for accounting for govermental and nonprofit system entities. Learning system.

Chicago Style (17th ed.) Citation

Hay, Leon E., and John H. Engstrom. Programed Learning Aid for Accounting for Govermental and Nonprofit System Entities. Learning system, 1981.

MLA (8th ed.) Citation

Hay, Leon E., and John H. Engstrom. Programed Learning Aid for Accounting for Govermental and Nonprofit System Entities. Learning system, 1981.

Warning: These citations may not always be 100% accurate.