Samuelson, P. A., & Nordhaus, W. D. (1989). Macroeconomics: A version of economics (13th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Samuelson, Paul A., agus William D. Nordhaus. Macroeconomics: A Version of Economics. 13th ed. New York: McGraw-Hill, 1989.
Lua MLA (9ú heag.)Samuelson, Paul A., agus William D. Nordhaus. Macroeconomics: A Version of Economics. 13th ed. McGraw-Hill, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.