Cita APA (7th ed.)

Pugel, T. (2009). International economics (14th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Pugel, Thomas. International Economics. 14th ed. Boston: McGraw-Hill, 2009.

Cita MLA (9th ed.)

Pugel, Thomas. International Economics. 14th ed. McGraw-Hill, 2009.