Lee, Cheng F.
Addison-Wesley, 1985
Buku Teks
Van Horne, James Carter, 1935-
Prentice Hall International, 1998
Buku Teks
Lasher, William R.
Western College Publishing , 2000
Buku Teks
Brigham, Eugene F., 1930-
Dryden Press, 1985
Buku Teks
Kolb, Burton A.
Irwin, 1988
Buku Teks