ROOT, F. R. (1990). International Trade And Investment. South Western.
Lua i Stíl Chicago (17ú heag.)ROOT, Franklin R. International Trade And Investment. South Western, 1990.
Lua MLA (8ú heag.)ROOT, Franklin R. International Trade And Investment. South Western, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.