Cita APA (7a ed.)

Arnold, R. A. (2010). Economics (International ed.). Thomson South-Western.

Cita Chicago Style (17a ed.)

Arnold, Roger A. Economics. International ed. Mason, OH, USA: Thomson South-Western, 2010.

Cita MLA (8a ed.)

Arnold, Roger A. Economics. International ed. Thomson South-Western, 2010.