Edrie, Robert, author
Black Swan, 2001
Buku Teks
Hamilton, Mark, author
Neo-tech books, 2000
Buku Teks
Chicago Urantia Foundation 1995,
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Piegl, Les A., author
Springer, 1997
Buku Teks
Knuth, Donald Ervin, 1938-, author
Addison-Wesley, 1986
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