Não informado. Records of New England Birds. Massachusetts Audubon Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Records of New England Birds. Lincoln, Mass: Massachusetts Audubon Society.
Lua MLA (8ú heag.)Não informado. Records of New England Birds. Massachusetts Audubon Society.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.