Não informado. (1976). Agricultural Water Management. Elsevier Scientific Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Agricultural Water Management. Amsterdam: Elsevier Scientific Publishing, 1976.
Lua MLA (8ú heag.)Não informado. Agricultural Water Management. Elsevier Scientific Publishing, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.