Howells, William D.
Mankind in the making : the story of human evolution
Doubleday, 1967
 Buku Teks SO
Brace, C. Loring
The stages of human evolution : human and cultural origins
Prentice-Hall, 1979
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Encyclopedia of human evolution and prehistory
edited by Eric Delson, Ian Tattersall, John A. Van Couvering and Alison S. Brokks
Garland Publishing, 2000
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Wendt, Herbert
In search of Adam : the story of man's quest for the truth about his earliest ancestors = Ich suchte Adam
Houghton-Mifflin, 1956
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McKee, Jeffrey K.
Understanding human evolution
Pearson/Prentice Hall, 2005
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