Lothers, John E.
Prentice-Hall, 1965
Buku Teks
Parker, Harry
John Wiley & Sons, 1983
Buku Teks
McCormac, Jack C.
Harper and Row , 1981
Buku Teks
editor, Roger L. Brockenbrough, Frederick S. Maerritt
McGraw-Hill, 1994
Buku Referensi
edited by Roger L. Brockenbrough, Frederick S. Merrit
McGraw-Hill, 1999
Buku Referensi