Cita APA (7th ed.)

Samuelson, P. A., & Samuelson, W. (2001). Economics (17th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Samuelson, Paul A., i William Samuelson. Economics. 17th ed. New York: McGraw-Hill, 2001.

Cita MLA (9th ed.)

Samuelson, Paul A., i William Samuelson. Economics. 17th ed. McGraw-Hill, 2001.