edited by William H. Hoffman
West Publishing, 1988
Buku Teks
Gaffney, Dennis J.
McGraw-Hill, 1982
Buku Teks
Burke, Karen C., 1951-
West Publishing, 1996
Buku Teks
Andrews, William D., 1931-
Little, Brown, 1979
Buku Teks
Gaffney, Dennis J.
McGraw-Hill, 1984
Buku Teks