(2007). Organically produced foods (third edition.).
Lua i Stíl Chicago (17ú heag.)Organically Produced Foods. third edition. 2007.
Lua MLA (9ú heag.)Organically Produced Foods. third edition. 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.