Caldwell, C. (1852). Thoughts on the original unity of the human race (2d. ed.). J. A. & U. P. James.
Lua i Stíl Chicago (17ú heag.)Caldwell, Charles. Thoughts on the Original Unity of the Human Race. 2d. ed. Cincinnati: J. A. & U. P. James, 1852.
Lua MLA (8ú heag.)Caldwell, Charles. Thoughts on the Original Unity of the Human Race. 2d. ed. J. A. & U. P. James, 1852.
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