Sloan, Irving J.
Ocean Publications, 1988
Buku Teks
Davis, Kenneth P., author
McGraw-Hill, 1976
Buku Teks
Mather, A.S., author
Wiley , 1986.
Buku Teks
Andrews, Richard B., author
The Free Press, 1971
Buku Teks
Thompson, Mark P., author
Sweet & Maxwell, 1995
Buku Teks