John Sikula, senior editor ; Thomas Buttery, editor, Edith Guyton, editor
Macmillan Library Reference USA, 1996
Buku Referensi
Kim, Ransoo, author
SeuolJong-Gak , 1986
Buku Teks
Harris, Myra A., author
Prentice-Hall, 1997
Buku Teks
Campbell, Enid Mona, author
The Law Book, 1967
Buku Teks
Cohen, Morris L., author
West Publishing, 1968
Buku Teks