Preston, Richard
The hot zone / Richard Preston
Random House, 1994
 Buku Teks SO
Mitchell, Mairin
The maritime history of Russia, 848-1948
Sidwick and Jackson, 1949
 Buku Teks SO
Mitchell, Mairin
Maritime history of Russia, 848-1984
Sidgwick and Jackson, 1949
 Buku Teks SO
Philip's atlas of world history
London Chancellor Press 1999,
 Buku Referensi
Cribb, Robert Bridson
Digital atlas of Indonesian history
NIAS Press, 2010
 Multimedia