Artikel Jurnal
Dodge, Dorothy, author
D. Van Nostrand, 1966
Buku Teks
Dyzenhaus, David, author
Oxford University Press , 1991
Buku Teks
edited by Jean-Jacques Hublin, Shannon P. McPherron
Springer Science, 2012
eBooks
N.Y. McGraw-Hill, 1976
Buku Teks