APA-čujuhus (7. p.)
Darwin, C. R., & Hutchins, R. M. The Origin of Species: By Means of Natural Selection. Encyclopaedia Britannica.
Chicago-čujuhus (17. p.)
Darwin, Charles R., juo Robert Maynard Hutchins. The Origin of Species: By Means of Natural Selection. Chicago, EUA: Encyclopaedia Britannica.
MLA-čujuhus (9. p.)
Darwin, Charles R., juo Robert Maynard Hutchins. The Origin of Species: By Means of Natural Selection. Encyclopaedia Britannica.
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