Weston, Paul B., author
Prentoce-Hall, 1981
Buku Teks
Auerbach, Jerold S., author
Oxford University Press, 1983
Buku Teks
Bohm, Robert M., author
McGraw-Hill , 2002
Buku Teks
Qorry Nisabella, author
Fakultas Hukum Universitas Indonesia, 2011
UI - Skripsi (Open)
Roth, Mitchel P., author
Cengage Learning , 2010
Buku Teks