Neumann, Richard K., author
Wolters Kluwer Law & Business, 2013
Buku Teks
McCormack, Mark H., author
Beech Tree Books, 1987
Buku Teks
Burge, David A.
John Wiley & Sons, 1980
Buku Teks
Averill, Lawrence H.
West Publishing Company, 1978
Buku Teks
Calvi, James V
Prentice-Hall, 1997
Buku Teks