Não informado. (1996). Nutrient Cycling in Agroecosystems. Kluwer Academic Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. Nutrient Cycling in Agroecosystems. Dordrecht, Holanda: Kluwer Academic Publishers, 1996.
Lua MLA (8ú heag.)Não informado. Nutrient Cycling in Agroecosystems. Kluwer Academic Publishers, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.