Rothstein, Michael F., author
Wiley-Interscience, 1970
Buku Teks
Calvez, Jean Paul, author
John Wiley & Sons, 1993
Buku Teks
Bacon, Jean, author
Addison-Wesley , 2003
Buku Teks
Corbin, John (John Boyd), author
Phoenix The Oryx Press, 1981
Buku Teks
CSIS, 1980
Majalah, Jurnal, Buletin