Cita APA (7a ed.)

Samuelson, P. A., & Nordhaus, W. D. (1989). Microeconomics: A version of economics (13th ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Samuelson, Paul Anthony, y William D. Nordhaus. Microeconomics: A Version of Economics. 13th ed. New York [etc.]: McGraw-Hill, 1989.

Cita MLA (9a ed.)

Samuelson, Paul Anthony, y William D. Nordhaus. Microeconomics: A Version of Economics. 13th ed. McGraw-Hill, 1989.