Hersey. My Work Is That of Conservation. University of Georgia Press.
Lua i Stíl Chicago (17ú heag.)Hersey. My Work Is That of Conservation. University of Georgia Press.
Lua MLA (8ú heag.)Hersey. My Work Is That of Conservation. University of Georgia Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.