Bailey, Sydney D.
Parliamentary government in Southern Asia
Institute of pacific relations, 1953
 Buku Teks SO
Powell, Ken
English historical facts 1485-1603
Macmillan Press, 1977
 Buku Teks SO
Stout, Hiram Miller
British government
Oxford University Press, 1953
 Buku Teks SO
Cook, Chris
British historical facts 1830-1900
Macmillan, 1975
 Buku Referensi
Jones, Bill
British politics today
Manchester University Press, 1993
 Buku Teks SO