Não informado. (2001). International Trade Statistics Yearbook. United Nations.
Lua i Stíl Chicago (17ú heag.)Não informado. International Trade Statistics Yearbook. New York: United Nations, 2001.
Lua MLA (8ú heag.)Não informado. International Trade Statistics Yearbook. United Nations, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.