Heaton, H., & Johnson, A. (1948). Socialism in Western Europa. New York: Foreign Policy Association.
Lua i Stíl Chicago (17ú heag.)Heaton, Herbert, agus Alvin Johnson. Socialism in Western Europa. New York: Foreign Policy Association, 1948.
Lua MLA (8ú heag.)Heaton, Herbert, agus Alvin Johnson. Socialism in Western Europa. New York: Foreign Policy Association, 1948.
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