Campbell-Johnson, Alan, author
E.P. Dutton, 1953
Buku Teks
Gasset, Jose Ortega Y., author
Routledge & Kegan Paul, 1952
Buku Teks
Artikel Jurnal
Moore, John Norton, author
Center for Law and National Security, 1984
Buku Teks
edited by Alphonse F. Trezza
G.K. Hall, 1990
Buku Teks