Darwin, C. (1962). The origin of species: By means of natural selection or the preservation of favored races in the struggle for life. The Nodern Library.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিDarwin, Charles. The Origin of Species: By Means of Natural Selection or the Preservation of Favored Races in the Struggle for Life. New York: The Nodern Library, 1962.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিDarwin, Charles. The Origin of Species: By Means of Natural Selection or the Preservation of Favored Races in the Struggle for Life. The Nodern Library, 1962.
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