Spross, C. G., & Moore, E. E. (1928). A bird-note is calling. John Church.
Lua i Stíl Chicago (17ú heag.)Spross, Charles Gilbert, agus Elizabeth Evelyn Moore. A Bird-note Is Calling. Cincinnati: John Church, 1928.
Lua MLA (9ú heag.)Spross, Charles Gilbert, agus Elizabeth Evelyn Moore. A Bird-note Is Calling. John Church, 1928.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.