Não informado. (1967). Audubon. National Audubon Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Audubon. New York: National Audubon Society, 1967.
Lua MLA (8ú heag.)Não informado. Audubon. National Audubon Society, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.