Não informado. (1919). Plant Disease Reporter. Agricultural Research Service.
Lua i Stíl Chicago (17ú heag.)Não informado. Plant Disease Reporter. Washington: Agricultural Research Service, 1919.
Lua MLA (8ú heag.)Não informado. Plant Disease Reporter. Agricultural Research Service, 1919.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.