Cheeseman, Henry R.
Pearson - Prentice Hall, 2006
Buku Teks
Miller, Roger LeRoy
Thomson West, 2007
Buku Teks
Buttler, Henry N.
South-Western Publishing Co., 1987
Buku Teks
Blackburn, John D.
Richard D. Irwin , 1985
Buku Teks
Lieberman, Jethro K.
Harcourt Brace Jovanovic, 1989
Buku Teks