Guell, R. C. (2010). Issues in Economics Today. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Guell, Robert C. Issues in Economics Today. McGraw-Hill, 2010.
Lua MLA (8ú heag.)Guell, Robert C. Issues in Economics Today. McGraw-Hill, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.