Não informado. (1961). Massachusetts audubon newsletter. Massachusetts Audubon Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Massachusetts Audubon Newsletter. South Lincoln, Mass: Massachusetts Audubon Society, 1961.
Lua MLA (8ú heag.)Não informado. Massachusetts Audubon Newsletter. Massachusetts Audubon Society, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.