Craig, Robin Kundis
Thomson/West, 2008
Buku Teks
Rose, Jerome G.
The State University of New Jersey, 1974
Buku Teks
Kubasek, Nancy K., author
Pearson - Prentice Hall, 2005
Buku Teks
Erickson, Steven L.
John Wiley & Sons, 1999
Buku Teks
Harcourt Brace Jovanovich Legal and Professional Publications, 1984
Buku Teks