Não informado. (1969). American beef producer. American National Livestock Association.
Lua i Stíl Chicago (17ú heag.)Não informado. American Beef Producer. Denver, Colo: American National Livestock Association, 1969.
Lua MLA (8ú heag.)Não informado. American Beef Producer. American National Livestock Association, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.