Preston, Richard
The hot zone / Richard Preston
Random House, 1994
 Buku Teks
Mitchell, Mairin
The maritime history of Russia, 848-1948
Sidwick and Jackson, 1949
 Buku Teks
Mitchell, Mairin
Maritime history of Russia, 848-1984
Sidgwick and Jackson, 1949
 Buku Teks
Selmann, R. R.
A student's atlas of modern history
Edward Arnold, 1953
 Buku Referensi
Sellman, Roger Raymond
An Outline atlas of eastern history
Edward Arnold, 1954
 Buku Referensi