Schmidt, D. (1875). The doctrine of descent and Darwinism (2nd ed.). H.S. King.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchmidt, Dr. The Doctrine of Descent and Darwinism. 2nd ed. London: H.S. King, 1875.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSchmidt, Dr. The Doctrine of Descent and Darwinism. 2nd ed. H.S. King, 1875.
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