1. Scientific American, sérútgáfa 2008 með yfirskriftinni „Majestic Universe“, bls. 11.

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

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

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

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

6. Wildlife in a Changing World — An Analysis of the 2008 IUCN Red List of Threatened Species. 2009. Ritstj. Jean-Christophe Vié, Craig Hilton-Taylor og Simon N. Stuart, bls. 6.

7. V. Torsvik, R. Sørheim og J. Goksøyr. 1996. „Total Bacterial Diversity in Soil and Sediment Communities — A Review.“ Journal of Industrial Microbiology, 17. árg., bls. 170-178.

8. Dylan Chivian, o.fl. 2008. „Environmental Genomics Reveals a Single-Species Ecosystem Deep Within Earth.“ Science, 322. bindi, 10. október, bls. 275-278.

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

10. Adam Summers. 2004. „As the Whale Turns.“ Natural History, júní, bls. 24-25.

11. „Flippered Flight.“ 2004. Science, Random Samples, 21. maí, bls. 1106.

12. „Is It a Bird, Is It a Plane . . .“ 2005. New Scientist, Technology, 3. september, bls. 21.

13. Arthur P. Fraas. 1989. Heat Exchanger Design, 2. útg., bls. 2.

14. „Technology That Imitates Nature.“ 2005. The Economist Technology Quarterly, Report, 11. júní, bls. 18-22.

15. Michael J. Behe. 2005. „Design for Living.“ The New York Times, 7. febrúar, bls. A21.

16. Richard Dawkins. 2005. „Darwin & Evolution — The Illusion of Design.“ Natural History, nóvember, bls. 37.

17. Charles Darwin. 1859 (1. útg.), 1872 (6. útg.). Origin of Species, bls. 285-286.

18. Charles Darwin — The Origin of Species með inngangi eftir sir Julian Huxley, 1958, til kynningar, First Signet Classic Printing, september 2003, bls. 458.

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

20. Wolf-Ekkehard Lönnig. 2005. „Expectations in Mutation Breeding.“ Mutation Breeding, Evolution, and the Law of Recurrent Variation, bls. 48, og viðtal við Wolf-Ekkehard Lönnig.

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

22. Mutation Breeding, Evolution, and the Law of Recurrent Variation, bls. 49, 50, 52, 54, 59, 64, og viðtal við Wolf-Ekkehard Lönnig.

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

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

25. Peter R. Grant. 1991. „Natural Selection and Darwin’s Finches.“ Scientific American, október, bls. 87.

H. Lisle Gibbs og Peter R. Grant. 1987. „Oscillating Selection on Darwin’s Finches.“ Nature, 11. júní, bls. 511.

Peter R. Grant og B. Rosemary Grant. 1992. „Hybridization of Bird Species.“ Science, 10. apríl, bls. 193-197.

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

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

 28. „Evidence Supporting Biological Evolution.“ Science and Creationism — A View From the National Academy of Sciences, 2. útg., bls. 14.

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

30. Richard C. Lewontin. 1997. „Billions and Billions of Demons.“ The New York Review of Books, 9. janúar, bls. 28-32.

31. Edward J. Larson og Larry Witham. 1999. „Scientists and Religion in America.“ Scientific American, september, bls. 91.

32. William B. Provine. 1989. „Evolution and the Foundation of Ethics.“ Science, Technology, and Social Progress. Ritstj. Steven L. Goldman, bls. 253, 266.