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3. Rare Earth—Why Complex Life Is Uncommon in the Universe, nga Piter D. Uardi dhe Donald Braunli, 2000, f. 224.

4. The Sacred Balance—Rediscovering Our Place in Nature, nga David Suzuki, 2007, f. 102.

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6. Wildlife in a Changing World—An Analysis of the 2008 IUCN Red List of Threatened Species, botuar nga Zhan-Kristof Vje, Krejg Hilton-Tejlor dhe Sajmon N. Stjuart, 2009, f. 6.

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21. Mutation Breeding, Evolution, and the Law of Recurrent Variation, f. 48-51.

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24. Science and Creationism—A View From the National Academy of Sciences, “Evidence Supporting Biological Evolution,” f. 11.

25. Scientific American, “Natural Selection and Darwin’s Finches,” nga Piter R. Granti, tetor 1991, f. 87;

Nature, “Oscillating Selection on Darwin’s Finches,” nga H. Lajl Gibsi dhe Piter R. Granti, 11 qershor 1987, f. 511;

Science, “Hybridization of Bird Species,” nga Piter R. Granti dhe B. Rozmari Granti, 10 prill 1992, f. 193-197.

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27. Sudden Origins—Fossils, Genes, and the Emergence of Species, nga Xhefri H. Shvarci, 1999, f. 317-320.

 28. Science and Creationism—A View From the National Academy of Sciences, “Evidence Supporting Biological Evolution,” f. 14.

29. The Triumph of Evolution and the Failure of Creationism, nga Najëllz Eldrexhi, 2000, f. 49, 85.

30. The New York Review of Books, “Billions and Billions of Demons,” nga Riçard C. Leuontini, 9 janar 1997, f. 28-32.

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