Viton, Albert
Great Britain : an empire in transition
John Day Company, 1940
 Buku Teks SO
Viton, Albert
Great Britain : an empire in transition
John Day Company, 1940
 Buku Teks SO
Moodie, Graeme C.
The Government of Great Britain
Crowell, 1971
 Buku Teks
Bosworth, A.B.
Conquest and empire : the reign of Alexander the Great
Cambridge University Press, 1995
 Buku Teks SO
Campion, H.
Public and private property in Great Britain
Oxford University Press, 1939
 Buku Teks