Cook, Chris
British historical facts 1760-1830
Macmillan, 1980
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Cook, Chris
British historical facts 1830-1900
Macmillan, 1975
 Buku Referensi
Kaplan, Jeffrey P.
English grammar : principles and facts
Prentice Hall International, 1995
 Buku Teks SO
English historical documents 500-1042
edited by Dorothy Whitelock
Eyre & Spottiswoode, 1955
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Clark, G. Kitson
English inheritance : an historical essay
SCM Press , 1950
 Buku Teks SO