Não informado. (2001). Bibliography of Agriculture. U.S. Department of Agriculture.
Lua i Stíl Chicago (17ú heag.)Não informado. Bibliography of Agriculture. Washington: U.S. Department of Agriculture, 2001.
Lua MLA (8ú heag.)Não informado. Bibliography of Agriculture. U.S. Department of Agriculture, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.