Não informado. (1923). Agriculture yearbook. U.S. Department of Agriculture.
Lua i Stíl Chicago (17ú heag.)Não informado. Agriculture Yearbook. Washington: U.S. Department of Agriculture, 1923.
Lua MLA (8ú heag.)Não informado. Agriculture Yearbook. U.S. Department of Agriculture, 1923.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.