Não informado. (1964). International agricultural development. International Agricultural Development Service.
Lua i Stíl Chicago (17ú heag.)Não informado. International Agricultural Development. Washington: International Agricultural Development Service, 1964.
Lua MLA (8ú heag.)Não informado. International Agricultural Development. International Agricultural Development Service, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.