Citace podle APA (7th ed.)
Darwin, C. R., & Hutchins, R. M. The Origin of Species: By Means of Natural Selection. Encyclopaedia Britannica.
Citace podle Chicago (17th ed.)
Darwin, Charles R., a Robert Maynard Hutchins. The Origin of Species: By Means of Natural Selection. Chicago, EUA: Encyclopaedia Britannica.
Citace podle MLA (9th ed.)
Darwin, Charles R., a Robert Maynard Hutchins. The Origin of Species: By Means of Natural Selection. Encyclopaedia Britannica.
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