The diplomatic service list 1989
Her Majesty's Stationery Office, 1989
 Buku Referensi
The diplomatic service list 1995
Her Majesty's Stationery Office, 1995
 Buku Referensi
Denton, D. Keith
The service trainer handbook : managing service businesses in the 1990's
McGraw-Hill, 1992
 Buku Referensi
Khan, Humayun
Diplomatic divide
Roli Book, 2004
 Buku Teks SO
Keneally, Thomas, 1935-
Schindler's list
Jalasutra, 2006
 Buku Teks SO