American Society of Agronomy. Journal of environmental quality.
Lua i Stíl Chicago (17ú heag.)American Society of Agronomy. Journal of Environmental Quality.
Lua MLA (8ú heag.)American Society of Agronomy. Journal of Environmental Quality.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.