Swanson, Charles R., author
Random House, 1984
Buku Teks
Lyman, Michael D., author
Pearson/Prentice Hall, 2005
Buku Teks
Anton Tabah, author
Cintya Press, 2005
Buku Teks
Dimasz Jeremia, author
Fakultas Hukum Universitas Indonesia, 2007
UI - Skripsi (Membership)
Gilbert, James N., author
Merril Publishing, 1990
Buku Teks