Salzman, L.F.
English life in the middle ages
Oxford University Press, 1955
 Buku Teks SO
Coote, Stephen
English literature of the middle ages
Penguin Group, 1988
 Buku Teks SO
Lane-Poole, Stanley, 1854-1931
A History of egypt in the middle ages
Methuen, 1968
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Stenton, Doris Mary
English society in the early middle ages (1066-1307)
Penguin Books, 1952
 Buku Teks SO
Stenton, Doris Mary
English society in the early middle ages (1066-1307)
Penguin Books, 1951
 Buku Teks SO