Dine, Janet, author
Macmillan, 1991
Buku Teks
Marshall, E.A.
Pitman, 1994
Buku Teks
Farrar, Harry, author
The Donnington Press, 1970
Buku Teks
Oliver, M.S
Pitman, 1994
Buku Teks
Kuneng Mulyadi, author
Badan Penerbit Fakultas Hukum Universitas Indonesia, 2001
Buku Teks