(2000). Journal Of Environmental. s.l.
Lua i Stíl Chicago (17ú heag.)Journal Of Environmental. s.l, 2000.
Lua MLA (8ú heag.)Journal Of Environmental. s.l, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)