Não informado. (1975). Irrigation and drainage abstracts. Commonwealth Agricultural Bureau.
Lua i Stíl Chicago (17ú heag.)Não informado. Irrigation and Drainage Abstracts. Slough, Inglaterra: Commonwealth Agricultural Bureau, 1975.
Lua MLA (8ú heag.)Não informado. Irrigation and Drainage Abstracts. Commonwealth Agricultural Bureau, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.