Rose, Dennis J
The Law Book Company Limited, 1967
Buku Teks
Lewis, Paul H.
Prentice Hall International, 1997
Buku Teks
Todd, Lewis Paul
Harcourt Brace Jovanovich, 1986
Buku Teks
Shuter, Paul
Heineman Educational , 1988
Buku Teks
Leet, Lewis Don, author
Dell, 1964
Buku Teks