Não informado. (1940). Agricultural Science and Genetics Newsletter. U.S. Department of Agriculture.
Lua i Stíl Chicago (17ú heag.)Não informado. Agricultural Science and Genetics Newsletter. Cold Spring Harbor, NY: U.S. Department of Agriculture, 1940.
Lua MLA (8ú heag.)Não informado. Agricultural Science and Genetics Newsletter. U.S. Department of Agriculture, 1940.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.