Stilson, Donald W.
Holden-Day , 1966
Buku Teks
Walpole, Ronald E., author
Prentice-Hall, 1998
Buku Teks
Spiegel, Murray R., author
Erlangga, 2004
Buku Teks
Kyburg, Henry E., author
Prentice-Hall, 1969
Buku Teks
Krickeberg, Klaus, author
Addison-Wesley, 1965
Buku Teks