Pinto, Arthur R., author
LexisNexis, 2009.
Buku Teks
Chisholm, Richard, author
Butterworth, 1978
Buku Teks
Clark, Robert C., author
Little, Brown, 1986
Buku Teks
Altschuler, Bruce E., author
Prentice-Hall, 1996
Buku Teks
Clarkson, C. M. V., author
Fontana , 1995
Buku Teks