Mortenson, Michael E.
Industrial Press, 1990
Buku Referensi
Hill, Francis S.
Macmillan, 1990
Buku Teks
Hearn, Donald
Prentice-Hall, 1986
Buku Teks
by Donald Greenberg [and others]
Addison-Wesley, 1982
Buku Teks SO
James D. Foley...[et.al]
Addison-Wesley , 1990
Buku Teks