Barnes, H. E., Chase, S., & Douglas, P. H. (1929). The socialism of our times. New York: The Vanguard Press.
Lua i Stíl Chicago (17ú heag.)Barnes, Harry Elmer, Stuart Chase, agus Paul H. Douglas. The Socialism of Our Times. New York: The Vanguard Press, 1929.
Lua MLA (8ú heag.)Barnes, Harry Elmer, et al. The Socialism of Our Times. New York: The Vanguard Press, 1929.
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