Henkin, Louis, author
USIS, 1991
Buku Teks
Carliner, David
Avon Books, 1977
Buku Teks
edited by Richard L. Perry and John C. Cooper
American Bar Foundation, 1964
Buku Teks
edited by Burke Marshall
National Public Radio, 1982
Buku Teks
Weinberger, Andrew D., author
Chandler Publishing, 1962
Buku Teks