Kaynak

63. D. C. Johanson, M. A. Edey, Lucy: The Beginnings of Humankind, Simon & Schuster, New York, 1981, s. 250.
64. Science News, vol. 115, 1979, ss. 196-197.
65. Gordon Rattray Taylor, The Great Evolution Mystery, Abacus, London, 1984, ss. 36-41.
66. Richard Dickerson, "Chemical Evolution", Scientific American, vol. 239, no. 3, 1978, s. 74.
67. Richard Leakey, "Modern & Tall", National Geographic, November 1985, s. 629
68. Richard Leakey, The Making of Mankind, Sphere Books, London, 1981, s. 62
69. Richard Lewontin, The Demon-Haunted World, The New York Review of Books, January 9, 1997, s. 28
70. "Old Bird", Discover, March 21, 1997
71. "Old Bird", Discover, March 21, 1997
72. http://www.ucmp.berkeley.edu/history/linnaeus.html
73. Isabelle Bourdial, "Adieu Lucy", Science et Vie, Mayıs 1999, no. 980, ss. 52-62.