Elder, David A.
Buku Teks
Kionka, Edward J., author
Thomson Reuters, 2010
Buku Teks
Jones, Michael A., author
Blackstone Press Limited, 2000
Buku Referensi
Statsky, William P., 1943-, author
Delmar Cengage Learning, 2012
Buku Teks
Morison, William Loutit, author
Law Book Company, 1968
Buku Teks