Organisation for the Prohibition of Chemical Weapons (OPCW), 2007
Majalah, Jurnal, Buletin
Peters, Edward I., author
McGraw-Hill, 1984
Buku Teks
Peters, Edward I., author
McGraw-Hill, 1992
Buku Teks
edited by Bryant W. Rossiter
John Wiley & Sons, 1980
Buku Teks
Spice, J.E.
Pergamon Press, 1964
Buku Teks