APA Citation

Ruffin, R. J., & Gregory, P. R. (1997). Principles of economics (6th ed.). Reading, Mass.: Addison-Wesley.

Chicago Style Citation

Ruffin, Roy J., and Paul R. Gregory. Principles of Economics. 6th ed. Reading, Mass.: Addison-Wesley, 1997.

MLA Citation

Ruffin, Roy J., and Paul R. Gregory. Principles of Economics. 6th ed. Reading, Mass.: Addison-Wesley, 1997.

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