Sebesta, Robert W., author
The Benjamin/Cumming Publishing Company.inc, 1989
Buku Teks
Sethi, Ravi, author
Addison-Wesley, 1989
Buku Teks
Sethi, Ravi, author
Addison-Wesley, 1989
Buku Teks
Tennent, R.D., author
Prentice-Hall, 1981
Buku Teks
Wilson, Leslie B., author
Addison-Wesley, 1988
Buku Teks