1. Scientific American, Rhifyn Arbennig 2008 gyda’r enw “Majestic Universe,” t. 11.

2. Perfect Planet, Clever Species—How Unique Are We? gan William C. Burger, 2003, tt. 24, 34.

3. Rare Earth—Why Complex Life Is Uncommon in the Universe, gan Peter D. Ward a Donald Brownlee, 2000, t. 224.

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

5. God and the New Cosmology—The Anthropic Design Argument, gan M. A. Corey, 1993, tt. 144, 145.

6. Wildlife in a Changing World—An Analysis of the 2008 IUCN Red List of Threatened Species, wedi ei olygu gan Jean-Christophe Vié, Craig Hilton-Taylor, a Simon N. Stuart, 2009, t. 6.

7. Journal of Industrial Microbiology, “Total Bacterial Diversity in Soil and Sediment Communities–A Review,” gan V. Torsvik, R. Sørheim, a J. Goksøyr, Cyfrol 17, 1996, tt. 170-178.

8. Science, “Environmental Genomics Reveals a Single-Species Ecosystem Deep Within Earth,” gan Dylan Chivian, ac eraill, Cyfrol 322, 10 Hydref 2008, tt. 275-278.

9. Scientific American, “Microbe Census Reveals Air Crawling With Bacteria,” gan David Biello, http://www.scientificamerican.com/ article.cfm?id=microbe-census-reveals-ai.

10. Natural History, “As the Whale Turns,” gan Adam Summers, Mehefin 2004, tt. 24-25.

11. Science, Random Samples, “Flippered Flight,” 21 Mai 2004, t. 1106.

12. New Scientist, Technology, “Is It a Bird, Is It a Plane . . . ,” 3 Medi 2005, t. 21.

13. Heat Exchanger Design, Ail Argraffiad, gan Arthur P. Fraas, 1989, t. 2.

14. The Economist Technology Quarterly, Adroddiad, “Technology That Imitates Nature,” 11 Mehefin 2005, tt. 18-22.

15. The New York Times, “Design for Living,” gan Michael J. Behe, 7 Chwefror 2005, t. A21.

16. Natural History, “Darwin & Evolution—The Illusion of Design,” gan Richard Dawkins, Tachwedd 2005, t. 37.

17. Origin of Species, gan Charles Darwin, Argraffiad Cyntaf, 1859, Chweched Argraffiad, 1872, tt. 285-286.

18. Charles Darwin—The Origin of Species, Rhagymadrodd gan Syr Julian Huxley, 1958 am y Rhagymadrodd, First Signet Classic Printing, Medi 2003, t. 458.

19. Nobel Lectures, Physiology or Medicine 1942-1962, 1999, “The Production of Mutations,” gan H. J. Muller, 1946, t. 162.

20. Mutation Breeding, Evolution, and the Law of Recurrent Variation, gan Wolf-Ekkehard Lönnig, “Expectations in Mutation Breeding,” 2005, t. 48, a chyfweliad gyda Wolf-Ekkehard Lönnig.

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

22. Mutation Breeding, Evolution, and the Law of Recurrent Variation, tt. 49, 50, 52, 54, 59, 64, a chyfweliad gyda Wolf-Ekkehard Lönnig.

23. Science and Creationism—A View From the National Academy of Sciences, “Evidence Supporting Biological Evolution,” 1999, t. 10.

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

25. Scientific American, “Natural Selection and Darwin’s Finches,” gan Peter R. Grant, Hydref 1991, t. 87;

Nature, “Oscillating Selection on Darwin’s Finches,” gan H. Lisle Gibbs a Peter R. Grant, 11 Mehefin 1987, t. 511;

Science, “Hybridization of Bird Species,” gan Peter R. Grant a B. Rosemary Grant, 10 Ebrill 1992, tt. 193-197.

26. Adaption and Natural Selection, gan George C. Williams, 1966, t. 54.

27. Sudden Origins—Fossils, Genes, and the Emergence of Species, gan Jeffrey H. Schwartz, 1999, tt. 317-320.

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

29. The Triumph of Evolution and the Failure of Creationism, gan Niles Eldredge, 2000, tt. 49, 85.

30. The New York Review of Books, “Billions and Billions of Demons,” gan Richard C. Lewontin, 9 Ionawr 1997, tt. 28-32.

31. Scientific American, “Scientists and Religion in America,” gan Edward J. Larson a Larry Witham, Medi 1999, t. 91.

32. Science, Technology, and Social Progress, golygwyd gan Steven L. Goldman, “Evolution and the Foundation of Ethics,” gan William B. Provine, 1989, tt. 253, 266.