Não informado. (1962). Foreign trade statistics for Africa. United Nations, Economic Commission for Africa.
Lua i Stíl Chicago (17ú heag.)Não informado. Foreign Trade Statistics for Africa. New York: United Nations, Economic Commission for Africa, 1962.
Lua MLA (8ú heag.)Não informado. Foreign Trade Statistics for Africa. United Nations, Economic Commission for Africa, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.