Não informado. (1980). Solutions. National Fertilizer Solutions Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Solutions. Peoria, Ill: National Fertilizer Solutions Association, 1980.
Lua MLA (8ú heag.)Não informado. Solutions. National Fertilizer Solutions Association, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.