Copland, D. Australia in the world crisis 1929-1933. The university press.
Lua i Stíl Chicago (17ú heag.)Copland, Douglas. Australia in the World Crisis 1929-1933. The university press.
Lua MLA (8ú heag.)Copland, Douglas. Australia in the World Crisis 1929-1933. The university press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.