Bulletin of the Cooper Ornithological Club. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Bulletin of the Cooper Ornithological Club. Oxford University Press.
Lua MLA (9ú heag.)Bulletin of the Cooper Ornithological Club. Oxford University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.