Baumol, W. J. (1988). Economics: Principles and policy macroeconomics (4ª ed.). Harcourt Brace Jovanovich.
Lua i Stíl Chicago (17ú heag.)Baumol, William J. Economics: Principles and Policy Macroeconomics. 4ª ed. Harcourt Brace Jovanovich, 1988.
Lua MLA (9ú heag.)Baumol, William J. Economics: Principles and Policy Macroeconomics. 4ª ed. Harcourt Brace Jovanovich, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.