Andrews, Peter and Lawrence Martin
1987 Cladistic Relationships of Extant and Fossil Hominoids. Journal of Human Evolution, 16:101-118.

Braeur, G.
1984 A Craniological Approach to the Origin of Anatomically Modern Homo sapiens in Africa and Implications for the Appearance of Modern Europeans.Chapter 14, pp. 327-410 in: The Origins of Modern Humans, Edited by F. Smith and F.Spencer. Alan Liss Co. New York, NY.

Brauer, G. and R.E. Leakey
1986 The ES-11693 Cranium form Eile Springs, West Turkana, Kenya. Journal of Human Evolution, 15:289-312.

Brooks, Daniel R. and E.O. Wiley
1986 Evolution as Entropy: Towards a Unified Theory of Biology. The University of Chicago Press, Chicago, IL.

Brown, James H. and Arthur C. Gibson
1983 Biogeography. The C.V. Mosby Company, St Louis, MO.

Chamberlain, A.T. and B.A. Wood
1987 Early Hominid Phylogeny. Journal of Human Evolution, 16:119-133.

Croizat, L.
1981 Biogeography: Past, Present and Future. Chapter 12, pp. 501-523 in: Vicariance Biogeography: A Critique: Symposium of the Systematics Discussion Group of the American Museum of Natural History, May 2-4, 1979. Edited by Gareth Nelson and Donn E. Rosen. Columbia University Press, New York, NY.

Cronquist, Arthur
1987 A Botanical Critique of Cladism. The Botanical Review, 53(1):1-52.

Cox, C. Barry and Peter D. Moore
1993 Biogeography: An Ecological and Evolutionary Approach, Fifth Edition. Blackwell Scientific Publications, Oxford, U.K.

Eldridge, N. and J. Cracraft
1980 Phylogenetic Patterns and the Evolutionary Process. Columbia University Press, New York, NY.

Foley, R.A.
1991 How Many Species Should There Be? Journal of Human Evolution, 20:413-427.

Hennig, W.
1966 Phylogenetic Systematics. University of Illinois Press, Urbana, IL.

Helwood, V.H. and J. McNeill
1964 Phenetic and Phylogenetic Classification. Publication No. 6, The Systematics Association, London, U.K.

Hull, D.L.
1988 Science as a Process. University of Chicago Press, Chicago, IL.

Kimbel, William H.
1991 Species, Species Concepts and Hominid Evolution. Journal of Human Evolution, 20:355-371.

Mayr, Ernst
1988 Toward a New Philosophy of Biology: Observations of an Evolutionist. The Belknap Press of Harvard University Press, Cambridge, MA.

Nelson, Gareth and Norman Platnick
1981 Systematics and Biogeography: Cladistics and Vicariance. Columbia University Press, New York, NY.

Nelson, Gareth and Donn E. Rosen (editors)
1981 Vicariance Biogeography: A Critique: Symposium of the Systematics Discussion Group of the American Museum of Natural History, May 2-4, 1979. Columbia University Press, New York, NY.

Novacek, Michael J.
1993 Reflections on Higher Mammalian Phylogenetics. Journal of Mammalian Evolution, 1(1):3-30.

Olson, T.D.
1978 Hominid Phylogenetics and the Existence of Homo in Member I of the Swartkrans Formation, South Africa. Journal of Human Evolution, 7:159-178.

Patterson, C.
1981 Methods of Paleobiogeography. Chapter 11, pp. 446-501 in: Vicariance Biogeography: A Critique: Symposium of the Systematics Discussion Group of the American Museum of Natural History, May 2-4, 1979. Edited by Gareth Nelson and Donn E. Rosen. Columbia University Press, New York, NY.

Ridley, Mark
1993 Evolution. Blackwell Scientific Publications. Boston, MA.

Simberloff, D., K.L. Heck, E.D. McCoy, and E.F. Conner
1981 There Have Been No Statistical Tests of Cladistic Biogeographical Hypotheses. Chapter 2, pp. 40-93 in: Vicariance Biogeography: A Critique: Symposium of the Systematics Discussion Group of the American Museum of Natural History, May 2-4, 1979. Edited by Gareth Nelson and Donn E. Rosen. Columbia University Press, New York, NY.

Stringer, C.B.
1987 A Numerical Cladistic Analysis for the Genus Homo. Journal of Human Evolution, 16:135-146.

Stringer, C.B.
1985 Middle Pleistocene Variability and the Origins of Late Pleistocene Humans. Chapter 16, pp.289-295 in: Ancestors: The Hard Evidence. Alan Liss, New York, NY.

Swofford, D.L.
1990 PAUP: Phylogenetic Analysis Using Parsimony, Users Manual. Version 3.5, Illinois Natural History Survey, Champaign, IL.

Trinkhaus, E.
1983 The Shadidar Neanderthal. Academic Press, New York, NY.

White, T.D., D.C. Johanson, and W.H. Kimbel
1981 Australopithecus africanus: Its Phyletic Position Reconsidered. South African Journal of Science, 77:445-470.

Wiley, E.O.
1981 Phylogenetics: The Theory and Practice of Phylogenetic Systematics. John Wiley and Sons, New York, NY.