Cita APA (7th ed.)

Samuelson, P. A. (1989). Macroeconomics: A version of economics. McGraw-Hill.

Cita Chicago (17th ed.)

Samuelson, Paul A. Macroeconomics: A Version of Economics. New York: McGraw-Hill, 1989.

Cita MLA (9th ed.)

Samuelson, Paul A. Macroeconomics: A Version of Economics. McGraw-Hill, 1989.