Francis, Jack Clark
McGraw-Hill, 1988
Buku Teks
Amling, Frederick
Prentice-Hall, 1965
Buku Teks
Jones, Charles P.
John Wiley & Sons, 2000
Buku Teks
Jones, Charles P.
John Wiley & Sons,
Buku Teks
Reilly, Frank K.
South-Western Cengage Learning, 2012
Buku Teks