Cita APA

Arnold, R. A., & Roger A Arnold. (2008). Economics. Cincinnati, Ohio: South-Western College Pub.

Chicago Style Citation

Arnold, Roger A., i Roger A Arnold. Economics. Cincinnati, Ohio: South-Western College Pub, 2008.

Cita MLA

Arnold, Roger A., i Roger A Arnold. Economics. Cincinnati, Ohio: South-Western College Pub, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.