Não informado. (2007). Report of the Division of the Agriculture. Iowa State College, Division of the Agriculture.
Lua i Stíl Chicago (17ú heag.)Não informado. Report of the Division of the Agriculture. Ames, Iowa: Iowa State College, Division of the Agriculture, 2007.
Lua MLA (8ú heag.)Não informado. Report of the Division of the Agriculture. Iowa State College, Division of the Agriculture, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.