Não informado. (1972). American Farmer. American Farm Bureau Federation.
Lua i Stíl Chicago (17ú heag.)Não informado. American Farmer. Fort Wayne, Ind: American Farm Bureau Federation, 1972.
Lua MLA (8ú heag.)Não informado. American Farmer. American Farm Bureau Federation, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.