Lend, E. (1938). The underground struggle in Germany. League for Industrial Democracy.
Lua i Stíl Chicago (17ú heag.)Lend, Evelyn. The Underground Struggle in Germany. New York City: League for Industrial Democracy, 1938.
Lua MLA (8ú heag.)Lend, Evelyn. The Underground Struggle in Germany. League for Industrial Democracy, 1938.
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