Não informado. (1963). US Forest Service Research Note SO. U.S. Forest Service.
Lua i Stíl Chicago (17ú heag.)Não informado. US Forest Service Research Note SO. Washington: U.S. Forest Service, 1963.
Lua MLA (8ú heag.)Não informado. US Forest Service Research Note SO. U.S. Forest Service, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.