Harper, Powler V
Little, Brown & Co., 1956
Buku Teks
Markesinis, B.S., author
Clarendon Press, 1990
Buku Teks
Fleming, John G., author
Law Book, 1992
Buku Teks
Fleming, John G., author
Law Book, 1971
Buku Teks
Statsky, William P., 1943-, author
Delmar Cengage Learning, 2012
Buku Teks