Doherty Gillian. Birds. Usborne.
Lua i Stíl Chicago (17ú heag.)Doherty Gillian. Birds. London: Usborne.
Lua MLA (9ú heag.)Doherty Gillian. Birds. Usborne.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)