Thorning, J. F. (1936). Communism in U.S.A. New York.
Lua i Stíl Chicago (17ú heag.)Thorning, Joseph F. Communism in U.S.A. New York, 1936.
Lua MLA (8ú heag.)Thorning, Joseph F. Communism in U.S.A. New York, 1936.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.