Cita APA (7th ed.)

Samuelson,Paul A. (2010). Economics (19th.). McGraw Hill Education.

Cita Chicago (17th ed.)

Samuelson,Paul A. Economics. 19th. New York: McGraw Hill Education, 2010.

Cita MLA (9th ed.)

Samuelson,Paul A. Economics. 19th. McGraw Hill Education, 2010.