APA-viite (7. p.)

Arnold, R. A. (2020). Economics (13th ed.). Cengage Learning.

Chicago-viite (17. p.)

Arnold, Roger A. Economics. 13th ed. Boston, MA: Cengage Learning, 2020.

MLA-viite (9. p.)

Arnold, Roger A. Economics. 13th ed. Cengage Learning, 2020.