Sorensen, Bent
A history of energy : Northern Europe from the stone age to the present day
Earthscan, 2011
 Buku Teks
Afghanistan in the mirror of the world press/Ministry of foreign Affairs of the Republic of Afghanistan
Ministry of Foreign Affairs of the Republic of Afghanistan , 1989
 Buku Teks
Gathorne-Hardy, G.M.
A short history of international affairs 1920-1939
Oxford University Press, 1952
 Buku Teks
Annual report 1988-89 / Department of Foreign Affairs and Trade
Australian Government Publishing Service, 1989
 Buku Teks
Japan's Northern Territories Japan / Ministry of Foreign Affairs
The Ministry of Foreign Affair, 1977
 Buku Teks