Jones, Charles P., author
John Wiley & Sons, 2000
Buku Teks
Amling, Frederick, author
Prentice-Hall, 1978
Buku Teks
Sharpe, William F., author
Prentice-Hall, 1999
Buku Teks
Jones, Charles P., author
John Wiley & Sons,
Buku Teks
Patel, Alpesh B, author
Palgrave Macmillan, 2005
Buku Teks