Cita APA

Spencer, D. E. .. (1990). Study guide Parkin economics. Reading, Massachusetts: Addison-Wesley.

Chicago Style Citation

Spencer, David E. Study Guide Parkin Economics. Reading, Massachusetts: Addison-Wesley, 1990.

Cita MLA

Spencer, David E. Study Guide Parkin Economics. Reading, Massachusetts: Addison-Wesley, 1990.

Atenció: Aquestes cites poden no estar 100% correctes.