Black, Uyless, author
Prentice-Hall, 1991
Buku Referensi
Hill, Francis S., author
Macmillan, 1990
Buku Teks
Hearn, Donald, author
Prentice-Hall, 1986
Buku Teks
by Donald Greenberg [and others]
Addison-Wesley, 1982
Buku Teks
Prueitt, Melvin L., author
Dover Publications, 1975
Buku Teks