Barnett, A. Doak (Arthur Doak), author
Frederick A. Praeger, 1962
Buku Teks
Lewis, John W., author
Cornell University Press, 1963
Buku Teks
Kelsen, Hans, author
Buku Teks
Thompson, Willie
Blackwell, 1998
Buku Teks
Hinton, Harold C., author
Houghton Miffiln, 1966
Buku Teks