Plaskitt, Harold
Government of Britain
University Tujorial Press, 1950
 Buku Teks
Viton, Albert
Great Britain, an empire in transition
John Day Company, 1940
 Buku Teks
Viton, Albert
Great Britain : an empire in transition
John Day Company, 1940
 Buku Teks SO
Philip, George
The shell road atlas of Great Britain
George Philip and Son, 1983
 Buku Referensi
Campion, H.
Public and private property in Great Britain
Oxford University Press, 1939
 Buku Teks