Zelle, John
Franklin, Beedle and Associates, 2010
Buku Teks
Gear, Charles William, 1935-
McGraw-Hill, 1985
Buku Teks
Kelley, Al.
The Benjamin Cumming Pub., 1984
Buku Teks
Plum, Thomas
Prentice-Hall, 1984
Buku Referensi
Balagurusamy, E.
Tata McGraw-Hill , 2012
Buku Teks