Mallery, Bob F.
McGraw-Hill, 1979
Buku Teks
Cargo, David N.
Addison-Wesley Pub. Co, 1977
Buku Teks
Plummer, Charles C., author
WBC, 1991
Buku Teks
Skinner, Brian J., author
John Wiley & Sons, 1987
Buku Teks
Longwell, Chester R., author
John Wiley & Sons, 1969
Buku Teks