Thoreau, H. D. (1987). Defesa de John Brown. Antígona.
Lua i Stíl Chicago (17ú heag.)Thoreau, Henry David. Defesa De John Brown. Antígona, 1987.
Lua MLA (8ú heag.)Thoreau, Henry David. Defesa De John Brown. Antígona, 1987.
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