Blackburn, T. M. Avian invasions. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Blackburn, Tim M. Avian Invasions. Oxford University Press.
Lua MLA (8ú heag.)Blackburn, Tim M. Avian Invasions. Oxford University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.