APA (7th ed.) Citation

Duffy, J. (1993). Economics. Cliffs Notes, Inc..

Chicago Style (17th ed.) Citation

Duffy, John. Economics. Lincoln, Neb.: Cliffs Notes, Inc., 1993.

MLA (9th ed.) Citation

Duffy, John. Economics. Cliffs Notes, Inc., 1993.

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