Rich, Lloyd, author
Reston Publishing, 1981
Buku Teks
Nichols, K.G., author
Crane, Russak, 1982
Buku Teks
Gilmore, Charles M., author
McGraw-Hill , 1996
Buku Teks
Pasahow, Edward J., author
McGraw-Hill, 1988
Buku Teks
Hanley, T., author
DP Publications, 1993
Buku Teks