American Society of Agronomy. (1998). Publications handbook and style manual. American Society of Agronomy.
Lua i Stíl Chicago (17ú heag.)American Society of Agronomy. Publications Handbook and Style Manual. Wisconsin: American Society of Agronomy, 1998.
Lua MLA (9ú heag.)American Society of Agronomy. Publications Handbook and Style Manual. American Society of Agronomy, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.