Não informado. (1987). Weed technology. Weed Science Society of America.
Lua i Stíl Chicago (17ú heag.)Não informado. Weed Technology. Champaign, Ill: Weed Science Society of America, 1987.
Lua MLA (8ú heag.)Não informado. Weed Technology. Weed Science Society of America, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.