Schmidt, O. (1875). The doctrine of descent and darwinism. With twenty-six woodcuts. Second edition (2a. ed.). Henry S. King & Co.
Citace podle Chicago (17th ed.)Schmidt, Oscar. The Doctrine of Descent and Darwinism. With Twenty-six Woodcuts. Second Edition. 2a. ed. Londres: Henry S. King & Co, 1875.
Citace podle MLA (9th ed.)Schmidt, Oscar. The Doctrine of Descent and Darwinism. With Twenty-six Woodcuts. Second Edition. 2a. ed. Henry S. King & Co, 1875.
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