Gwartney, J. D. (1990). Economics: Private and public choice (5th ed.). Harcount brace jovanovich.
Lua i Stíl Chicago (17ú heag.)Gwartney, James D. Economics: Private and Public Choice. 5th ed. San diego: Harcount brace jovanovich, 1990.
Lua MLA (9ú heag.)Gwartney, James D. Economics: Private and Public Choice. 5th ed. Harcount brace jovanovich, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.