Raup, David M.
W.H. Freeman and Co., 1978
Buku Teks
Ladizinsky, Gideon, author
[, Springer], 2012
eBooks
Leonard, Jonathan Norton, author
Time-Life Books, 1973.
Buku Teks
Edey, Maitland A. (Amstrong), 1910-
Time-Life Books, 1975
Buku Teks
Perl, Philip.
Time-Life Books, 1979
Buku Referensi