Beams, Floyd A.
Prentice-Hall, 2000
Buku Teks
Engler, Calvin
Irwin, 1995
Buku Teks
Haried, Andrew A.
John Wiley & Sons, 1994
Buku Teks
Yorston, Robert Keith, Sir.
The Law Book Co, 1978
Buku Teks
by Daniel L. Jensen ... [et al.]
McGraw-Hill, 1994
Buku Teks