Cita APA (7th ed.)

Samuelson, P. A. (1998). Economics (16th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Samuelson, Paul A. Economics. 16th ed. Boston: McGraw-Hill, 1998.

Cita MLA (9th ed.)

Samuelson, Paul A. Economics. 16th ed. McGraw-Hill, 1998.