Não informado. (2020). Crop Science, Soil Science, Agronomy News. American Society of Agronomy.
Lua i Stíl Chicago (17ú heag.)Não informado. Crop Science, Soil Science, Agronomy News. Madison, Wis: American Society of Agronomy, 2020.
Lua MLA (8ú heag.)Não informado. Crop Science, Soil Science, Agronomy News. American Society of Agronomy, 2020.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.