Darwin, C., & Case, D. (2006). The origin of species by means of natural selection, or, The preservation of favored races in the struggle for life. Tantor Media.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDarwin, Charles, और David Case. The Origin of Species by Means of Natural Selection, or, The Preservation of Favored Races in the Struggle for Life. [S.l.]: Tantor Media, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDarwin, Charles, और David Case. The Origin of Species by Means of Natural Selection, or, The Preservation of Favored Races in the Struggle for Life. Tantor Media, 2006.
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