Pascarelli, Emil F., author
John Wiley & Sons, 2004
Buku Teks
Stebben, Gregg, author
Pocket Books, 1999
Buku Referensi
Novas, Himilce , author
A Plume Book, 2004
Buku Teks
Young, Bruce K., author
Bantam Dell, 2008
Buku Teks
Bagnall, Philip M., author
Springer, 2012
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