Alton, Walter G.
Little,Brown and Company, 1977
Buku Teks
Newman, Donald J.
Little, Brown & Co., 1966
Buku Teks
Bailey, F. Lee
The Lawyers Co-Operative Publishing, 1971
Buku Teks
YLBHI, 1997
Buku Teks
Minear, Richard H.
Charles E. Tuttle Company, 1982
Buku Teks