Não informado. (1966). Research Note NC. U.S. Forest Service.
Lua i Stíl Chicago (17ú heag.)Não informado. Research Note NC. Washington: U.S. Forest Service, 1966.
Lua MLA (8ú heag.)Não informado. Research Note NC. U.S. Forest Service, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.