Cita APA (7th ed.)

Arnold, R. A. (2007). Economics (Concise ed.). Thomson Business and Economics.

Cita Chicago (17th ed.)

Arnold, Roger A. Economics. Concise ed. Mason, OH: Thomson Business and Economics, 2007.

Cita MLA (8th ed.)

Arnold, Roger A. Economics. Concise ed. Thomson Business and Economics, 2007.