Pugel Thomas A. (2009). International Economics (13th.). Tata McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Pugel Thomas A. International Economics. 13th. New Delhi: Tata McGraw-Hill, 2009.
Lua MLA (9ú heag.)Pugel Thomas A. International Economics. 13th. Tata McGraw-Hill, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.