Parker, B. M. (1941). Birds. Row, peterson.
Lua i Stíl Chicago (17ú heag.)Parker, Bertha Morris. Birds. New York: Row, peterson, 1941.
Lua MLA (9ú heag.)Parker, Bertha Morris. Birds. Row, peterson, 1941.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.