Turtle, Quentin C.
Prentice-Hall, 1994
Buku Teks
Prasad, Biren
Prentice-Hall, 1996
Buku Teks
Ritz, George J., author
New York: McGraw-Hill, 1990
Buku Teks
Harding, H. A., author
Balai Aksara, 1984
Buku Teks
Shtub, Avraham, author
Prentice-Hall, 1994
Buku Teks