(2002). Symposium on natural resources and environment management. UPN.
Lua i Stíl Chicago (17ú heag.)Symposium on Natural Resources and Environment Management. UPN, 2002.
Lua MLA (8ú heag.)Symposium on Natural Resources and Environment Management. UPN, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.